2027 Jemez Mountain Trail Run
Jemez Mountain Trail Run: a challenging, scenic trail half marathon in the Jemez Mountains.
Expected Race Date
~May 2027
Date not yet announced — this is when the race usually runs.
Location
Los Alamos, NM
Quick facts
- Date
- around May 2027 (expected)
- Location
- Los Alamos, New Mexico
- Distance
- Half marathon (13.1 mi)
- Course
- Loop Course
- Terrain
- Trail
- USATF certified
- Not listed
Highlights
Good For
Atmosphere
The Experience
The Jemez Mountain Trail Run is a small, dedicated event set in the rugged terrain of Los Alamos, New Mexico. With a median field of around 225 finishers, this trail half marathon offers an intimate, communal experience where about a third of runners return year after year. The course winds through the Jemez Mountains, a landscape of piñon-juniper forests and volcanic rock, with steep climbs and technical descents that reward both grit and scenery.
Runners tackle a challenging mountainous route, often under sunny skies with temperatures ranging from the low 40s to mid-60s. The atmosphere is low-key but supportive, with volunteers and locals cheering along the single-track trails. Finishers are greeted with the satisfaction of conquering a demanding course, and the post-race gathering keeps the community vibe alive. Now in its 19th year, this race is a hidden gem for trail enthusiasts seeking a true mountain challenge.
Race-provided description
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Jemez Mountain Trail Runs
Nineteenth Annual Jemez Mountain Trail Runs (JMTR)
50 mile, 50k, 15 mile
Saturday, May 9, 2026
Kudos to everyone that toed the line in the 2026 JMTR races. We appreciate you all coming out and making our races a fun, rewarding event! The 2026 results are available online now (http://sites.chronotrack.com/event/91454). We look forward to seeing you in 2027 for the twentieth running of the JMTR!
The JMTR 2026 Runners Manual is now available on our blog. Check it out. (https://www.jemezmountaintrailruns.org/single-post/jmtr-2026-runners-manual-now-available)
For timely updates and additional news see the Blog page (https://www.jemezmountaintrailruns.org/blog). Also, we encourage you to join the JMTR Facebook gro
Course Info
Course Type
Loop Course
Terrain
trail
Scenery
Mountain, Forest
Difficulty
Mountainous
Quality Score
Solid Pick588 years running
~227 finishers a year
shrinking
32% returning runners
limited extras
runners from 1 state
winner 1:57:24
typical high 66°F
Race Day Weather
5-year historical avgStart (Low)
41°
Afternoon (High)
66°
Pleasant conditions — light layers at start, comfortable by finish
0.2"
Precipitation
15 mph
Wind
38%
Humidity
Frequently asked
When is the 2027 Jemez Mountain Trail Run?
The 2027 Jemez Mountain Trail Run hasn't announced its next date yet, but it typically takes place around May 2027 (expected).
Where does the 2027 Jemez Mountain Trail Run take place?
It takes place in Los Alamos, New Mexico.
What distances does the 2027 Jemez Mountain Trail Run offer?
The half marathon (13.1 miles).
Is the 2027 Jemez Mountain Trail Run course flat and good for a PR?
The 2027 Jemez Mountain Trail Run is a mountainous, loop course course.
HalfRuns editorial — independent, no paid placement.
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