Registration FOR 2018 IS NOW OPEN! 


100 MILE, 50 Mile, 55k, & HALF MARATHON Trail Run

FEBRUARY 24-25th, 2018 

Course Description:

100 miler- The 100 mile course replicates the 50 mile course (see description below) with the addition of 5 loops on the spectacular Page Rim Trail overlooking parts of Glen Canyon and Lake Powell. After we put on this race in 2015, several seasoned ultrarunners described it as a perfectly designed 100 mile course. The first 50 miles are full of exploration to highlights such as Antelope Canyon, Horseshoe Bend, Waterholes Canyon, and overlooks of Lake Powell. After wearing yourself out on these more sandy and technical sections, the second 50 miles are locked on the smooth, singletrack, ten-mile loop of the Page Rim trail. where you'll have aid stations every 5 miles that you'll make repeat visits to. The accessibility of this loop trail makes it logistically perfect to plan and prepare for the long night ahead with your drop bags, and for your crew and pacers to support you. And since the Page Rim trail circumnavigates the city of Page, your crew will never be more than a few minutes away from their hotel room or campsite, so you won't have to worry about their comfort. And, if you're interested in running the 50 miler but it's sold out, consider signing up for the 100- Anyone completing the first 50 miles of the 100 mile course will receive a 50 mile finish award (but nothing short of 100 will earn you a buckle!)

50 miler- On this course you will experience two of the most photographed land features in the country- Antelope Canyon and Horseshoe Bend of the Colorado River. After traversing the desert sand and slickrock to reach these unbelievable features, the run finishes out on smooth single track around the plateau that the city of Page, AZ is built upon, with jaw-dropping views of Lake Powell. 

Runners start with a 5 mile desert traverse on a sandy doubletrack with a little slickrock and a slot canyon mixed in.

Near mile 4, runners will drop into the first slot canyon of the day, at the bottom of which is Antelope Aid Station.

After the aid station you'll enter a large open wash, which you will follow south for about 3 miles to the entrance to the incomparable Upper Antelope Canyon.  (This is one of the most photographed slot canyons in the world.)

Navajo guides will be posted along the route, as travel on tribal lands requires their presence in order to visit the sacred sites. After passing through the slot canyon, runners will climb over a sand dune and pass through another small slot canyon on the return (since the canyon isn’t wide enough for two way traffic.) You’ll return to the Antelope Aid station for the second time, then retrace your footsteps back towards the starting line for about 3.5 miles, where you’ll split off from the way you came and head west toward the Horseshoe Bend/Waterholes Canyon leg. Slickrock Aid will be about a mile into the desert after crossing S. Coppermine Rd.

From there, runners will traverse another open desert for about 3 miles before reaching the famous Horseshoe Bend of the Colorado River. An aid station will be set up near the parking lot of this spectacular overlook (Horseshoe Bend Aid).

The next section weaves through slickrock along the rim of the Colorado River, in an area that few humans have traveled which offers views that are beyond words.

After crossing back over Hwy 89, runners will fuel up at the Waterholes Aid station before dropping into another gorgeous slot canyon. The aid station is located near the bridge.)

After about a mile in the slot, runners will exit and head back towards the city of Page on a long, exposed, and sandy desert traverse which takes you through the Horseshoe Bend and Slickrock aid stations for a second time.  Upon entering Page and climbing up onto the plateau which the city is built upon, the route ties into the smooth singletrack of the Page Rim trail. This is a fast and very runnable ten mile loop with spectacular views of Lake Powell and Glen Canyon Dam. 

***Note that there is a short out and back trail that you'll need to take in order to access the Lake Powell Aid Station (0.18 miles each way)

The 55K will begin at 7:00am and will run directly to Slickrock Aid station and then out to Horseshoe Bend and Waterholes Canyon and finishes out with a lap on the Page Rim trail.

The HALF MARATHON will begin at 8:00am and runs around the slickrock formation that the starting line is next to, then links up onto the Page Rim trail and does a single loop.  It then returns to the starting line via the more direct route that the other race distances will use to get up onto the mesa.

Average low temperature: 34 degrees Farenheit

Average high temperature: 60 degrees Farenheit

***Please note that the 55K does not pass through Upper Antelope Canyon.  It does pass through Waterholes slot canyon. Only the 100 mile and 50 mile courses run through Upper Antelope Canyon. 




2pm-7pm - 100, 50, 55k and Half Marathon check-in at the Slickrock amphitheater, off of Coppermine Rd and Hwy 98.  Click here to view map


5am - Last minute check-in opens

5:55am - 50 mile start

6am - 100 mile start

6:30 am - 55K Start

7:00 am - Half Marathon Start

11:00 am - Half Marathon Finish

5:30 pm - 55K Finish

8:55 pm - 50 Mile Finish


Noon - 100 Mile Finish

*All Distances Start and Finish at the slickrock amphitheater staging area.


TIME requirements:

All who cross the finish line will receive a finisher award regardless of finish time. However, if you finish past the minimum pace time, you will be disqualified from the race and receive a DNF.

During the race, any runner may drop down to a short distance to receive the shorter distance’s finisher award. Doing so will disqualify the runner from the original distance and will be listed as a DNF at the original distance.

We publish a minimum pace time as a reference for the minimum pace you must maintain to finish before receiving a DNF. The Race Officials have the right to remove anyone from the race for any reason.

For the 100 mile and 50 mile distances there are two “Grim Reaper” check points that you must pass before the posted time or you will be required to drop out of the race. Non-Compliance with the Race Officials instructions will result in a DNF and may result in a ban from future events at our discretion.

Overall awards will be scored based on gun time.  Both gun time and chip times will be published.


Minimum pace times

100 mile - 30 hours

50 mile - 15 hours

55 K - 11 hours

Half Marathon - 4 hours

Click here for a detailed table of minimum pace times and grim reaper check points.


Drop Bags:

Personal Drop Bags will be allowed at the following 4 aid stations

  • Horseshoe
  • Water Holes
  • Page Rim
  • Powell

Please follow these guidelines: 

-All bags must be labeled with name, bib # (in large print), aid station, and race distance.  Optional, but a good idea if your label comes off, is a card inside with the same information and contact information.  Please label your bags the day before the race on your own or at check in.  Trying to label your bags on race morning is not a good idea.  It is often dark and busy. 

-All drop bags must be left in designated drop off location by 8PM the night before race day.

-No valuables or fragile items in your drop bags. We are not responsible for any lost/stolen items.

-Watch the weather forecast.  If there is any chance of rain, place your items in zip lock bags inside of your drop bag.

-Minimum size:  Gallon size freezer zip lock.  No grocery store plastic bags or garbage bags..

-Maximum size:  Shoe box for single pass and daytime aid stations.  Small duffle or small carry on for multiple pass aid stations.

Aid Station Info:

At each Aid Station there will be a designated area for Drop Bags that runners wish to have returned to the finish line for retrieval. Drop bags will be returned to the starting line throughout the day, but it is the responsibility of the runner to put their drop bag in the “return” area.

The 100 miler will pass through 21 fully stocked aid stations, the 50 miler has 10, the 55K has 8, and the Trail Half has 2.

Here is a tentative list of items that you can expect to be found at all aid stations: water, an electrolyte drink, a variety of fresh cut fruit, several salty items and several sweet items, soda, and first aid supplies.

Aid stations after mile 26 in the race will also have real food that may include boiled potatoes, tortillas w/ Nutella, PB&J, turkey sandwiches, dill pickles, chips, a variety of candies, anti chafing agent, sunscreen.  

We will have a limited supply of gels, salt caps, and electrolyte caps. Remember this list is subject to change. If any item is of critical importance to your ability to finish, please consider putting it in your drop bag. While we want to do our best to help each runner finish the race, food selection is often a guess as to what each runner will want or need, and we occasionally guess wrong. For example, if you always need a Coca Cola soda at mile 80, do not count on the aid station to provide this; you should put it in your drop bag.

****Please note that alcoholic drinks are prohibited at this race and is not allowed on the Navajo Reservation. Breaking this rule jeopardizes our permits and will result in immediate disqualification and may result in a ban from future events. Alcohol within Page City limits is allowed, but please refrain from posting your consumption online.

The 50 miler will pass through 10 fully stocked aid stations, the 55K has 8, and the Trail Half has 2. 

Here is a tentative list of items that may be found in aid stations: water, an electrolyte, fresh cut fruit, several salty items and several sweet items, and soda. Aid stations later in the race will also  have real food that may include boiled potatoes, tortillas w/ Nutella, PB&J, turkey sandwiches, dill pickles, chips, a variety of candies, anti chafing agent, sunscreen, first aid supplies.  We will have a limited supply of gels, salt caps, and electrolyte caps. Remember this list is subject to change.


Pacers & Crew:

Crew access is allowed at the Horseshoe Bend, Page Rim, and Lake Powell aid stations. Pacers may only join their runner after Horseshoe Bend 2nd Pass. No Pacers are allowed through Water Holes Canyon or Horseshoe Bend sections of the course.

Due to limited parking and high runner numbers, crew must be shuttled into the Horseshoe Bend aid station from the start/finish area. Shuttles will pick up/drop off crew approximately every 20-30 minutes while the aid station is open. 

Crew can walk up the trail from the start/finish parking area to the Page Rim aid station or crew their runner from the parking lot.

Click here for directions to Lake Powell Aid Station. Park along 20th street.

Pacers can be picked up for the 100 mile, 50 mile and 55K races when the runners pass near the start/finish area on their way to the Page Rim Aid Station.

Pacers will need to register (no cost) with race on Friday and must sign a participation waiver. They will be issued a bib that must remain visible. The bib will allow them use of aid stations and finish line. However, please be considerate of other participants as we do not want to have to start charging for pacers in the future.

You are responsible for the actions of your crew and pacers. If their behavior is deemed inappropriate by race staff, you will be disqualified. Please let them know this and only choose crew members that will treat our volunteers and staff with respect while you are out on the course.

Runner Tracking

Due to the remote location of this race, we will not be able to provide live updates for any distances. We will account for runners on the course and keep communication lines open among our staff members, but we will likely not have the ability to communicate runner whereabouts to your loved ones during the event. If you would like to let friends and family know your status on the course, you can text them from the areas of the course with cell service (there are many points on the course where reception is  good enough to get a text out, but it can be difficult to get a phone call out.)

If you're worried about your cell phone battery, you can turn it off after sending a text, leave it in airplane mode, or carry a small battery backup device. There are also apps available such as Race Joy which will automatically update your whereabouts when you come into a reception area. (These apps tend to drain your cell phone battery and the use of a battery backup device will be necessary if you plan on leaving it on for the duration of the event.) 


rules and guidelines

These races are challenging and may be life changing for many of the participants. We view our role as making this challenging feat a little safer and a little more comfortable. However, this does not negate the inherent risks and responsibilities of the runner. Please spend some time reviewing the course descriptions and maps before you arrive at the event. (provide link to the maps section of the website

The main route will be marked with pink flags.  Any route variations unique to your distance will be marked with the color of your bib. Any tricky junctions will be marked well with signs and flour arrows. A piece of highly reflective tape is attached to each trail marker that may be encountered at night.

While we do our very best to make the route clear, it is the responsibility of the runner to know the route and to be able to follow the flags. If you are running too fast to pay attention, or are “zoned out” and get off course, you may be disqualified.  

It is the responsibility of the runner to check in at each aid station (coming in only, no need to check out of the aid station.) Seek out the aid station worker wearing the fluorescent orange vest and give them your bib number. Failure to check in at an aid station can result in disqualification.

Drop Procedure

If you drop out of the race YOU MUST TURN IN YOUR BIB TO THE NEAREST AID STATION CAPTAIN. If you fail to do this, you will be responsible for all search party costs.


Zero Waste Event:

All of our events are zero waste, with less than 5% of the trash produced at the event going to the landfill. We have created a system that recycles/reuses everything. However, we need your help.  Please place trash in the appropriate containers at the start/finish lines as well as on course. All trash will be sorted, so please do your best to keep organic/compostable waste outside of the recycle bins. If you have questions, please ask. We love talking about our Zero Waste efforts. :)

Littering on the course will result in disqualification.

We also use composting toilets which conserve water, eliminate the use of harmful chemicals, and create a nutrient rich soil amenity. It’s the best toilet experience available. Let us know what you think!


PRE/Post Race Meal:

Each runner will be given a food ticket when they pick up their bib. Your ticket can be redeemed for one meal from one of the vendors onsite. You must present your ticket to redeem your meal, which will be available at check-in on Friday or from 2-10pm on Saturday. No meals will be available Sunday. Crew and spectators can purchase food at the finish line.


Lodging / Camping:

Click here to view a list of hotels located in the small city of Page, AZEach of these hotels offers quick access for your crew to meet you while you’re running the Page Rim trail, which encircles the mesa that the city is built upon. 

Lake Powell Resort is a luxury resort located on Lake Powell, a ten minute drive from the starting line.  Guests can book online or call 1-800-528-6154.

We will have portable composting toilets set up from Thursday through Sunday at the slickrock amphitheater staging area for runner use. 


Getting Here:

Las Vegas International Airport is about 4 hrs from Page. A quick scenic detour would be to drive through Zion National Park on Hwy 9 to Hwy 89, then south to Kanab and east to Page.  (This would add about an hour of driving time.)  

It is about 4 1/2 hours from Phoenix to Page, but the south rim of the Grand Canyon is next to this route, making it easy to plan a side trip.  

Salt Lake City is 5 hrs and 45 min, but this route passes within 15 minutes of the entrances into both Bryce Canyon and Zion national parks, making it convenient to detour and see these places.  


Awards & SHWAG:

A variety of handmade finisher awards will be available, including Navajo jewelry pieces and ceramic mugs. Special awards will be given to the top 3 overall male and female finishers for each distance as well. There will be a brief awards ceremony for each distance that will be held after the 3rd runner has crossed the finish line, and the checkpoints have been verified. We will work hard to get the awards verified quickly, but it may take some time to get them finalized.



We hope that you will join us at the finish line for as long as you’d like to welcome home the other finishers. One of our goals is to create a welcoming environment for you to hang out with old and new friends. While the 50 milers will be done by 9:00pm, the 100 milers will be finishing through the night and can use our support. We hope you will stay to help bring everyone in off the trail.

Showers: For those that may need a location to shower after the race, the Page Lake Powell Campground is allowing shower access to our runners. Showers are $4 and is a 1 minute drive from the finish line.

>Page Campground



Registration Policies:

If you are unable to run the race you registered for, you have three options: Deferment, Event Transfer, or Refund.


You have 2 choices when it comes to your deferment. Up until the close of the expo on the night before the event, and for a $20 fee, you can defer to the following year’s event, or you can transfer to another one of our events.

  • Defer to another race: Runners will be allowed to defer their registration to any eligible Vacation Races event. Start the process by logging into your RunSignUp account > Click “Edit Registration” > select “Transfer to Another Race”. A list of eligible races to transfer to will show up and you can select which race to defer to. 
  • Defer to next year’s race or a future race: To defer to the next year’s event, log into your RunSignUp account and defer your registration. This will remove you from the current year’s race and put you on our deferral list for the following year’s race. When the following year’s race registration opens, you will be sent a coupon code to use for a future event. You will not be registered for the event, until you use the coupon and register for the event. Start the process by logging into your RunSignUp account > Click “Edit Registration” > select “Defer Registration”.

Click here for further directions on how to defer a registration


Transfer to a different Event: Runners will be allowed to transfer their registration to a different distance in the same race (as long as the event is not sold out). Start the process by logging into your RunSignUp account> Click “Edit Registration” > select “Transfer to Another Event”. A list of eligible events to transfer to will show up and you can select which event to transfer to. Only the amount of the registration, not the race extras or processing fees, will be transferred. If the event you are transferring to costs more, you will need to pay the difference. If the event costs less, you will not be refunded any amount. 

Note: Event Transfers can only be done online 7 days or more prior to the event, after that this must be done at the race expo. 


Request A Refund: Runners will be allowed to cancel your registration and receive a refund (of your paid entry fee and any race extras not yet received, does not include processing fees).

  • If you request a refund during the race’s Early Bird Registration you’ll get a full refund with no processing fee.
  • If you request a refund during the race’s Regular Bird Registration window, you’ll get a full refund minus a $10 processing fee.
  • If you request a refund during the Late Bird Registration window, you will no longer be able to get a refund.

Start the process by logging into your RunSignUp account > Click “Edit Registration” > select “Request a refund”. Only the amount of the registration, not donations or processing fees, will be refunded.

We understand life happens- accidents, illnesses, and other circumstances. That is why we have provided an amazing deferment policy. Up to the night before the race, you can defer your race entry to another event or the next year’s event. Refer to the deferment policy above to get started.


THings to do and see while you're here

We realize that the races in this series are out of the way for most runners, and it may be the only time that you visit these breathtaking areas. One of our biggest desires at Ultra Adventures is that you walk away from this event having fully experienced what the region has to offer. Even a 100 mile course can only capture a portion of these unique areas. We want you to get into and explore the heart of the national park, walk through that remote slot canyon, see that incredible overlook that is not part of the course. Most often, these spectacular areas are protected as part of a national park, monument, or wilderness area where races are not permitted as part of the management plan. These are often the areas most frequented by tourists, but  are nevertheless places that we feel you must see while you’re visiting. It is our hope that through a more in depth exploration of the area, you will become more connected to the local landscape, thus creating more stakeholders in its preservation.

Here is our list of favorite trails in the surrounding area:


Buckskin Gulch: (distance varies, minimum- 3.5 miles out and back from Wire Pass trailhead to petroglyphs and Buckskin confluence)- Take picture anywhere in Buckskin Gulch- can be accessed from Buckskin Gulch trailhead or Wire Pass trailhead.  Click here for trail description.   If the conditions are right, you can make it all the way to the Paria Confluence.  If there is a lot of standing water, turn back. Attempting to run a through route this time of year is NOT RECOMMENDED.  Click on this story to read why.  You will need to pay the$6/day hiking fee to the BLM for this leg (envelopes available at the trailhead).

Cable Trail to Colorado River- Take picture at the Colorado River.  This one is easily accessible from Page, located just across the bridge on the opposite side of the canyon.  Click here for trail description.   Click here for a video clip

- Cathedral Wash, Jackass Canyon, or Soap Creek to the Colorado River-  Choose just one or all three of these canyons to access the Colorado River within the boundaries of Grand Canyon national park. If Hwy 89 is still washed out and not operational at the time of the 2014 event, you may want to do one of the alternate Trifecta options listed below as the current alternate route adds an extra 45 minutes driving time. Take a picture at the river.  Click here for trail descriptions

Paria River- Your feet will get wet on this one, but you really should check it out if you have the time. February is not the ideal time of year to go deep into the Paria due to the cold and ice, but it is amazing nonetheless. 

Wahweap Hoodoos/Toadstools- These hoodoos are pretty unique.  Big boulders balanced on tall, narrow bases.  

Navajo National Monument- While the guided hikes into the canyon to see the ruins up close are not offered in the winter months, you can still get an amazing view from the opposite side of the canyon via a trail from the visitor's center that's about a half mile.  This would be a nice and easy post-race hike to do, and I highly recommend driving through Shonto if you're coming from Page.  

Lower Antelope Canyon - Must be accompanied by a Navajo guide.  Price is between $25-$30, depending on the company.

Kayaking Lower Antelope Canyon (kayaks can be rented in Page and fastened to almost any vehicle).

Kayaking the Colorado River above Lees Ferry - Unbelievable!!  Your only chance to paddle the Grand Canyon is between Lee’s Ferry and Glen Canyon Dam, where it’s not officially part of the national park.  Due to limited permits issued to rafting companies, the waiting list and price make rafting the Grand Canyon out of reach for most. Click on the link for info on kayak rental and a ferry/tow upriver service.

Rainbow Bridge National Monument (via boat or trail)- While this one is pricey ($125) due to the 3 hour scenic boat ride (each way) to access it, the arch (natural bridge) is unlike any other you’ll ever lay eyes on.  Boat trips are limited to Saturdays in the off season unless we get 20 runners to sign up for a Friday trip. Contact Lake Powell Resorts if interested. 

Navajo Mountain to Rainbow Bridge- (35 miles round trip)- This can take the place of 3 trifectas as it will require a lot of planning and is truly epic, traversing sacred lands to the largest natural bridge in the world. I will be very jealous if you're able to get this adventure in during your trip as it has been high on my bucket list for many years. Make sure you get appropriate permits and have maps and supplies for the worst case scenario. It would be best to hire a Navajo guide for this one. 

The Wave (Coyote Buttes)- I wish it were possible to include this at the top of our list. Such an amazing hike and it's so close (shares the same trailhead as the Buckskin Gulch/Wire Pass hike).  But the BLM only gives out ten permits a day and has up to 90 applicants, so there is a daily lottery, for which you must drive to Kanab and be present just to be in the lottery. Call the BLM office found in the above link for more info.

- White Pocket- This is almost as cool as the Wave (from what I hear)- Only problem is that it's a long 4wd approach so it's very difficult to reach.



Antelope Canyon 50 


Antelope canyon 55k


ANTELOPE Canyon Half


50 Mile Map (PDF)

55K Map (PDF)

Half Marathon Map (PDF)


Total Elevation Gain:

50 mile: ~4,500 ft of elevation gain

55km: ~3,200 ft of elevation gain

Half Marathon: ~725 ft of elevation gain






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