High Alpine New Mexico Trail Running is the BEST! This Grassroots Trail Run looks to showcase some high altitude trails, perfect for escaping the Summer heat and the opportunity to support the areas wonderful resorts.
We invite you join us for the weekend at Pajarito Mountain and the town of Los Alamos. This venue is perfect for spending time outdoors, enjoying the beautiful natural landscapes of the River Grande Valley and the numerous outdoor recreation opportunities. From the Stone Age to the Atomic Age, Los Alamos has a history of discovery. Pajarito Mountain Ski Area was built entirely by volunteers—men and women who continue to be an active part of this community today. Let us help you discover the rich history of Pajarito.
We take great pride in the preservation of trail systems used during the event and conduct necessary trail maintenance prior to the event, as well as sweeping the courses to ensure no trash is left behind and that the trails are in great shape for future adventurers.
The Pajarito Mountain Run starts and finishes near the Lodge and makes a 3.25 Mile ascent up to the Summit of Pajarito Mountain before beginning a serpentine descent on "Aspen For Trouble" Trail back to the Lodge. The route tops out at over 10,200' and has 1,350' of ascent. The route begins with a mile of rolling Singletrack on the Lower Aspenola Trail before beginning the roughly 2.25 Mile ascent on Service Road to the Summit Aid Station. From there, you’ll begin your descent on the Aspen For Trouble Singletrack with a short bout on Service Road before finishing up with another short stint on Singletrack to the Finish! The course will be thoroughly marked with YELLOW flagging, arrows along with other directional signage at relevant junctions. There are no cut offs on route so hikers are more than welcome. I believe this to be a very fun and engaging route but will be slightly short of a 10K. Don’t worry though, it’s still a worthy challenge.
Standard (until July 31st) - $65 Late (August 1st - August 14th) - $75 *T-Shirt Deadline for guaranteed sizing is August 10th. Race Day - $80 (Cash Only) Refund Policy *21 Days or more prior to the Event: 50% rollover credit of registration fee (excluding UltraSignup fees). Less than 21 days prior to the Event: No refunds or credit given. To request credits, log in to your UltraSignup account, and go to "Registration History" and select Edit Event.
Packet Pick Up will be race morning from 8-8:45AM at the Pajarito Lodge, on the back deck by the Start/Finish Arch. Race starts promptly at 9:00AM. Summit Aid Station will be roughly 3 miles into the race. This is primarily a water station but we will have some sort of Sports Nutrition gels available. If possible, please bring your own water vessel so we can minimize the amount of waste going to the landfill.
Aug 22, 2026
Distance — 10K
Type — Running
09:00
$65.00
Learn more about the host city, Los Alamos.
Los Alamos is a small town in northern New Mexico, about an hour northwest of Santa Fe. Its claim to fame is the Los Alamos National Laboratory (LANL), where Oppenheimer and other physicists created the world's first atomic bomb during World War II, concluding the Golden Age of Modern Physics and heralding the Atomic Age. Many of Los Alamos's 12,000 residents work at the laboratory. White Rock, with about 6,000, is a part of Los Alamos, but is separated from the main town by LANL. Nearly all of LANL is closed to the public, but the town has a couple of museums which are good places to learn about the history of the town.
Read more launchAll-time top performances and historical records for Pajarito Mountain Run.
| Place | Name | Year | Time | |
|---|---|---|---|---|
| 🥇 | Logan Ott | '25 | 00:50:46 | |
| 🥈 | Paul Geimer | '25 | 00:51:40 | |
| 🥉 | David Tung | '25 | 00:58:55 | |
| 4 | Mike Engelhardt | '25 | 00:59:07 | |
| 5 | Colin Papworth | '25 | 1:09:05 | |
| 6 | Scott Thalacker | '25 | 1:10:06 | |
| 7 | Harris Mason | '25 | 1:10:49 | |
| 8 | Kaden Adrian | '25 | 1:12:22 | |
| 9 | Kevin Ma | '25 | 1:14:43 | |
| 10 | Alex Long | '25 | 1:15:55 |
Read what other athletes have to say about their experience at the Pajarito Mountain Run.
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location_on Santa Fe, New Mexico, US
calendar_today Sep 19, 2026
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