Run through the second largest desert in North America

at Seminole Canyon State Park

5k, 10k, 13.1mi, 26.2mi, 50k, and 50mi

February 27, 2021

The Border to Badlands Ultra

Presented by the Del Rio CVB

The Race

5k, 10k, 13.1mi, 26.2mi, 50k, and 50mi

Eco Region:  Desert

Everything is bigger in Texas. This is more than just a race. This is an experience. Come take in the prehistoric area dating back some 10,000 years in a sprawling desert, with majestic canyons.


Call for Volunteers

Join the Fun

As a Volunteer, you are the person that gives the runner the support and motivation to continue.  We know how  important each of you are to the entire day and promise you a fun and rewarding experience!


Multiple Packages

Great Opportunity

This is a great opportunity to share your company, brand and services with a large and targeted group. As a sponsor of one or more events, you can select from the multiple sponsorship levels available.


Please be sure to read this important information before attending the race.     

Read Now >>

The Race

The Course

Come run in a prehistoric area dating back some 10,000 years where Indigenous people left cave art as evidence of their presence tucked into the weather beaten Chihuahuan Desert, the second largest desert in North America!


Experience the uniqueness of the desert wildlife and flora, be awe inspired by the incredible views of Seminole Canyon meeting the Rio Grande River, and view, at a distance, cave art as you traverse this loop course over technical single-track trail and backcountry jeep roads.


This is a bucket list event that you don’t want to miss. 


Note: You DO NOT need a passport for this race. However, if you would like to visit Mexico via the border crossing in Del Rio, Texas you will need a valid passport.

Start and Finish Times

The Start and Finish for all distances will be at Canyon Rim trailhead parking lot.

  • 6:00 am - 50 mile Start

  • 7:00 am - 26.2mi & 50k Start

  • 7:30 am - Half Marathon Start

  • 8:00 am - 5k and 10k Start

NOTE:  All races start at the scheduled time. Late starts will not be accommodated. 



The cutoff for all distances are as follows:

SATURDAY – February 27, 2021

  • 4:00 pm -   5k, 10k, Half Marathon, Marathon, and 50k

  • 7:00 pm -   50 mile


Course Markings

The race will be marked with in ground flagging and color coordinated directional signage for each race distance.​



View park maps and explore the trails via the interactive map.


View Course maps

Course Difficulty 

3 = Moderate course over flat terrain with some rolling countryside along canyons. Approximately, 50% of the course is technical single track and 50% dirt jeep road.








Aid Stations

Well stocked Aid Stations manned by passionate volunteers and unmanned aid stations, provide:

  • First Aid:  Band-Aids, Vaseline, and other basic first aid supplies

  • Food/Drink:  Water, electrolyte drinks, and various salty, sweet and savory snacks


Aid stations will be conveniently located every 3-4 miles on the loop course.​

Cupless Race

This is an environmentally friendly race and it is our goal to keep the trails litter free to preserve their beauty. 


Cups won't be supplied during this racing event.  Please bring your refillable water bottles and we will refill them at the aid stations.

Training / Coaching

At every level, proper training can help you prepare for success. Ultra Expeditions has certified coaches and offers individual and group training packages. Contact us for more information.

Race Shirts, Medals and Awards

Everyone registered will receive a Border to Badlands Ultra Race Shirt if they register by February 10, 2021.


Finishers of the 5k, 10k, half marathon, marathon, 50k, and 50mi will receive beautiful, custom designed medals. 

Winner Awards


Top Male and Top Female for each race. Awards will be emailed after the race ends.

Pictures and Video


FRIDAY – February 26, 2021

3:00 - 5:00 pm  Packet Pick Up and Registration at the Canyon Rim

trailhead parking lot

SATURDAY – February 27, 2021

5:30 - 8:00 am - Packet Pick Up and Registration at the Canyon Rim 

trailhead parking lot

6:00 am - 50 mile Race Start at Canyon Rim trailhead parking lot.

7:00 am - Marathon and 50k Start at Canyon Rim trailhead

parking lot

7:30 am - Half Marathon Start at Canyon Rim trailhead parking lot

8:00 am - 5k and 10k Start at Canyon Rim trailhead parking lot

4:00 pm - 5k, 10k, Half Marathon, Full Marathon, and 50k cutoff

7:00 pm - 50 mile cutoff

NOTE:  Race briefings begin promptly, 20 minutes prior to race start time, at the start line. If they choose to drop during the race they will receive a DNF.



Online registration is quick and easy.



Registration is open

Saturday, February 27, 2021

6:00 am - Registration will remain open until the start of each race

Early Registration Discounts

Sign up early to get the best pricing.

  • Best Discount - Before August 31, 2020

  • Good Discount - Before November 30, 2020

  • Standard Pricing - After November 30, 2020


Be part of the fun and volunteer.  We promise you a great time.


All of our volunteers receive discounts toward future races and enjoy free food, beverages and parking.

There are opportunities to man aid stations, registration and help at the start and finish lines.

Contact us for more information.  Or sign up now.

Parking, Lodging and Travel 

Park Entrance and Parking

Seminole Canyon State Park

P.O. Box 820 
Comstock, TX 78837



PLEASE NOTE: The park may collect fees for entrance and/or parking that are not covered in race registration. The park will be open for racers to arrive and leave.  Please pay at the Visitors Center if arriving after scheduled hours. Contact Seminole Canyon State Park for more information.



UPDATE: Utility work is going on in the park and camping has been suspended until further notice. However, the event will NOT be affected and will continue. ​Other lodging can be found in the city of Del Rio and camping can be found at Amistad National Recreation Area. There will be NO park running water or restrooms available. However, there will be portable toilets on the race course.

Camping (including primitive) is NOT available at Seminole Canyon State Park. For further information, please contact Seminole Canyon State Park at 432.292.4463.

PLEASE NOTE:  Ultra Expeditions is not responsible for any missing or damaged property, or any accidents.

ALSO NOTE: The park may collect fees for entrance and/or parking that are not covered in race registration.  Contact Seminole Canyon State Park for more information.

Directions to the Start

All race distances start and finish at Canyon Rim Trailhead Parking Lot



The closest hotels are in Comstock and Del Rio, Texas.

View complete listing

Ramada Inn Del Rio

Call 830.775.1511 to make reservations and mention Ultra Expeditions and this race name to get a special rate of $89/night (+ tax), includes breakfast.

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The closest airports are:

Del Rio International Airport


Sponsorship Opportunities

There are multiple sponsorship levels available. 

Title Platinum, Gold, Silver, Bronze

Get all the Sponsorship Package Details.  

Learn more >>



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