Holloman Ace of Races Marathon | Half Marathon | 5K | Kids Dash
Oct 10Alamogordo, NMMarathon, Half Marathon +1
Half Marathon, 4 weeks before race day, 105 mi away, registration open
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planWe are so excited to be back for our second year!
Located in the beautiful Southwestern Chihuahuan Desert, this race takes you through the canyon south of the Living Desert Zoo & Gardens on State Park and city land. Open to runners, hikers, ruckers, and walkers, you can participate in 1 of 3 challenges: 1 hour, 4 hour, or 8 hour challenge. Participants will have their selected time frame to complete as many 2-mile trail loops (out-and-back) as possible or desired. Carlsbad Roadrunners will provide support including 2 aid stations; 1 at the half-way point, and 1 at the bottom of the hill. If you have been wanting to attempt a longer distance, or even complete an ultra, this event is for you! Bring your family and friends to support you as you complete the Ocotillo Trail Endurance Challenge.
Note: Please continue to check our Facebook Page - Carlsbad Roadrunners, for the most current and up to date event information.
Event Location: Upper Parking lot at SENMC (32.442401, -104.266905) Carlsbad, NM 88220.
- Please use available parking at SENMC (covered parking available) overflow is open at other campus parking lots and within reasonable walking distance).
The race will be fully contained to the Ocotillo Trail. This is an approx. 2 mile (3.21 km) out and back trail with approx. 229 ft. (69.79 m) of elevation gain.
All race categories will start promptly at the designated race times listed below. Please allow plenty of time to arrive at the start line. If you are driving to the race, plan to arrive early. See parking information above. The past year had plenty of parking right at the start/finish line.
This race will have an official time start time with all categories beginning at 8 am.
1 hour: 8:00am (completed by 9am)
4 hour: 8:00am (completed 12pm)
8 hour: 8:00am (completed by 4pm)
Relay teams will switch off as often as desired at the trailhead of the race.
Packet pick-up and registration will only be available on the morning of beginning at 7am - 7:45am
Race Bib Number Requirements:
Each solo participant will receive a race bib number that must be worn on race day. Please DO NOT alter your race number in any way. Your bib number must be visible and worn on the front outside of all clothing during the entire race. Bib numbers are transferable by request and MUST be worn by the runner to whom it is assigned. Please reach out if a transfer is needed.
Medical staff members will be ready to assist you at any time. Radio communications personnel will be positioned at the 1 mile mark on the course.The event officials have the right to withdraw any runner from the race who appears distressed or at risk. You will be directed to the medical area at the finish line if you have a health or medical problem. Note: If you cannot finish the race for any reason, please notify a race official of your bib number so medical personnel know.
This is a timed event and awards will be given to the top finisher (male, female) with the most distance covered in their respective events determined by gun time. The first place team for the 4 hour and 8 hour relay events will not be determined by gender or whether the team is co-ed, but based on total distance.
Proceeds:
The event proceeds (outside of resulting race costs) will be donated to a local Carlsbad charity.
Please note: Should severe weather that creates dangerous conditions for participants cause cancellation of the race, there will be no refunds (but proceeds are going to a good cause!)
Registration opens
Jan 24, 2026
Registration closes
Nov 4, 2026
Standard ends
Nov 4, 2026
Race day
Nov 7, 2026
Ocotillo Trail Endurance Challenge (8 HOUR RELAY)
Standard, until Nov 4, 2026
$75
Ocotillo Trail Endurance Challenge (8 HOUR)
Standard, until Nov 4, 2026
$65
Ocotillo Trail Endurance Challenge (4 HOUR RELAY)
Standard, until Nov 4, 2026
$55
Ocotillo Trail Endurance Challenge (4 HOUR)
Standard, until Nov 4, 2026
$45
Ocotillo Trail Endurance Challenge (1 HOUR)
Standard, until Nov 4, 2026
$25
Registration openings and major changes, like a new date or a cancellation.
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Oct 10Alamogordo, NMMarathon, Half Marathon +1
Half Marathon, 4 weeks before race day, 105 mi away, registration open
Oct 17Midland, TXHalf Marathon, 10K +1
Half Marathon, 3 weeks before race day, 137 mi away, registration open
Straight-line distance
Oct 17Cloudcroft, NM
95 mi from Ocotillo Trail Endurance Challenge, 3 weeks before Ocotillo Trail Endurance Challenge, registration open
Oct 17Cloudcroft, NM50K, 32K
100 mi from Ocotillo Trail Endurance Challenge, 3 weeks before Ocotillo Trail Endurance Challenge, registration open
Nov 20Las Cruces, NM24 hr
144 mi from Ocotillo Trail Endurance Challenge, 2 weeks after Ocotillo Trail Endurance Challenge
Apr 16, 2027Capitan, NM34 hr, 12 hr
109 mi from Ocotillo Trail Endurance Challenge
Straight-line distance
Oct 17Cloudcroft, NM50K, 32K
Nov 7Cuba, NM53 mi, 55K +3
Nov 14Truth or Consequences, NM50K, Half Marathon +1
Nov 28Albuquerque, NM50K, 25K +1
Feb 13, 2027Socorro, NM53K
Feb 20, 2027Cedar Crest, NM52K, 26K +1
Oct 17Cloudcroft, NM
Apr 16, 2027Capitan, NM34 hr, 12 hr
Jan 21, 2027El Paso, TX
Nov 20Las Cruces, NM24 hr
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Build my planAre you the race director for Ocotillo Trail Endurance Challenge?
Claim this race to manage registration, volunteers, and race day.