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SW100 2022 IMG_0708 JG.heic

Southwest 100


Fort Davis National Historic Site, Fort Davis Texas
5k, 10k, 13.1mi, 26.2mi, 50mi, 100mi

Williams Andrade Friends.HEIC

Eco Trail Race

5k, 10k, 13.1mi, 26.2mi, 50mi, 100mi

This is your chance to experience the remote southwest. If you are looking for a challenging and iconic race with breathtaking views coupled with rich history, then this is the race for you.

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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.

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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.

The Race

The Course

Nestled in the historic Davis Mountains, this race starts on the legendary San Antonio-El Paso Road in the heart of Fort Davis National Historic Site. In the 1800s this remote outpost was set up by the U.S. Army as a refuge for travelers making the 600 mile journey by horse or wagon train. It was also home to the famous Buffalo Soldiers.

From Fort Davis you'll climb a rocky, single track into the Davis Mountains as you enter Davis Mountains State Park. As the vast panorama opens up, you'll take in the thin mountain air at over a mile high.


For those that go into the night, you'll gaze at the same wide open, dark sky studied by the nearby McDonald Observatory.

Start and Finish Times

The Start and Finish is at the Fort Davis National Historic Site

5:00 am     50mi, 100mi

7:00 am     Marathon

7:30 am     Half Marathon

8:00 am     5k, 10k start

RACE BRIEFINGS - begin 10 minutes prior to race start time, at the start line

RACES START - on the scheduled time for each distance and late starts are not accommodated



11:00 am     Marathon - must start second loop

12:30 pm     50mi - must start second loop

3:00 pm       5k, 10k, Half Marathon, Marathon

8:00 pm       50mi


9:30 am      100mi - must start last loop

3:00 pm      100mi

Course Markings

Races are marked with in-ground flagging and directional signage for each distance. 



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


Course Difficulty 

6 = Moderate to Strenuous course with technical single track terrain, steep climbing, ample elevation gain and loss.



YES - this race is part of the Texas Trail Running Eco Series - Ultra Cup and Eco Challenge



Registration will remain open until the start of each distance - unless otherwise noted and/or the the race is Sold Out

A runner can step up or down in race distance up until the official race start time. After race start, changes in distances result in a DNF.

A runner can change his/her distance online 

Early Registration Discounts

Sign up early to get the best pricing.

Last day for each price break is:

  • Best Discount - October 17, 2022

  • Good Discount - January 9, 2023

  • Standard Pricing - Race Day

Swag and Awards

RACE SHIRT - Guarantee a shirt, register by March 5, 2023

MEDAL - All 5k, 10k, 13.1mi, 26.2mi, 50mi finishers receive a custom designed medal

BUCKLE - 100mi finishers receive a custom designed buckle

AWARDS - The first place Male and Female in each race distance, receive an award

Award notifications are sent via email

Race Pictures


FRIDAY – March 24, 2023

4:00 - 6:00 pm    Packet Pick Up - at Prude Ranch

                              Enjoy a Pasta Buffet Dinner - $16 / person

                              Contact Prude Ranch if you plan on attending

SATURDAY – March 25, 2023

4:00 am              Venue opens at Fort Davis National Historic Site

4:30 - 8:00 am   Packet Pick Up

4:30 am              50mi, 100mi - drop bag drop off deadline

5:00 am              50mi, 100mi - start

7:00 am              Marathon - start

7:30 am              Half Marathon - start

8:00 am              5k, 10k - start

11:00 am            Marathon - must start second loop

3:00 pm              5k, 10k, Half Marathon, Marathon - cutoff

12:30 pm            50mi - must start second loop

8:00 pm              50mi - cutoff

SUNDAY – March 26, 2023

9:30 am             100mi - must start last loop

3:00 pm             100mi - cutoff​

Aid Stations

Well stocked Aid Stations manned by passionate volunteers, provide

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

  • Food/Drink:  Crazy Water, electrolytes, various salty, sweet and savory snacks

  • Drop Bags: All racers in every distance can have a drop bag. Clearly mark the bag with your name and the aid station where you want the bag to be dropped. We recommend that you choose the start / finish aid station.


  • Start and Finish Area: Fort Davis National Historic Site

  • Davis Mountains State Park Interpretive Center

  • Davis Mountains State Park Primitive Equestrian Camping Area

  • Intersection of Sprawl Rd. and Sheep Pen Canyon Trail

*Some aid stations may be unmanned

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. Learn More >> 

Trevor Meding Headlamp Ridge.HEIC

Parking, Lodging and Travel 

Park Entrance and Parking


Fort Davis National Historic Site, Fort Davis, TX 79734

PLEASE NOTE: Racers park entry fees are included with their registration. However, friends, family, spectators, and any other individual not registered to race will need to pay the park entry fee when entering the park.

Observe all parking signs and do not park illegally. The event is not responsible for violations, towing, damages or theft. 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 Fort Davis National Historic Site for more information.

Directions to the Start

The race starts at the:


Fort Davis National Historic Site

Fort Davis National Historic Site, Fort Davis, TX 79734



Prude Ranch

Mention Ultra Expeditions and this race to get a special rate of $129/night (+ tax).

To make reservations call the ranch at 432-426-3201 or send an email

For all information on Fort Davis and the closest hotels visit: 



Camping is available at Davis Mountains State Park. For reservations or further information, please contact Davis Mountains State Park at 432.426.3337.

PLEASE NOTE:  The event and event organizers are not responsible for any missing or damaged property, or any accidents.

Our Amazing Sponsors

Presented Sponsor



Partner Sponsors

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Multiple Sponsorship Packages available.

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