15 Mile

The 2020 15 mile course is unchanged from previous years (GPX). See the 2020 courses map for details. There are no cutoffs for the 15 mile race.  However, for the safety and consideration of our aid station volunteers we ask that all 15 mile runners maintain as least a fast hiking pace.  Our expectation is that all 15 mile participants will complete the race in less than 7 hours. 

50k and 50 Mile

The 2020 50km course will be the same as 2019 (GPX) except the Quemazon AS has moved to the Ice Rink (mile 24.7) for 2020. See the 2020 courses map for details. 


The 2020 50 mile course will be roughly 2 miles longer than last year (~53 miles).  50 mile runners should note that the cutoff times will be similar to last year and those runners who were close to the cutoff last year will likely miss them this year. Please see our January 22, 2020 blog post with 2020 course and cutoff information. See the 2020 courses map for details.

Start: Posse Lodge, North Mesa in Los Alamos, NM. The 50 mile run starts at 5:00am, the 50 kilometer starts at 6:00am, and the 15 mile starts at 8:00am.

Directions to start/finish: Take Diamond Drive north to the roundabout. Go straight through the roundabout and up the hill onto North Mesa. The Posse Lodge is approximately 1 mile from the round about. (Google map of Posse Lodge).

Cutoffs for 2020 50 mile race:

  • 12:20pm [24.7 miles] at Ice Rink (mandatory switch to 50K)

  • 2:20pm [33.8 miles] at Mitchell First Time (mandatory switch to 50K)

  • 3:00pm [21.7 miles] at Camp May

  • 8:20pm [49.1 miles] at Mitchell 2nd time

Cutoffs for 2020 50k race and 50k ruck race:

  • Camp May [21.7 miles] at 3:00pm

  • Ice Rink [24.7 miles] at 5:00pm

  • Mitchell [27.9 miles] at 7:00pm

Aid Stations: Aid Stations Driving Directions for crew/spectators can be found in the 2019 JMTR Runners Manual.

Maps of the Los Alamos Area marked map of Los Alamos townsite.


Pacers are allowed in the 50 mile race starting at the Mitchell AS (first time though) at approximately 32 miles. You can also get a pacer at the second pass through the Mitchell Aid station at ~47 miles. No pacers are allowed for the 50km and 15 mile races.

Geospatial PDF Course Map

[2020 Maps Coming Soon!] Geospatial course maps allow you to view your location on a PDF document on your mobile device. We recommend installing the free Avenza app (iOS or Android) for viewing our geospatial PDF course maps. Once you have the Avenza app installed, download and add any or all of the geospatial PDF course maps below:


There are many ways to add one of the above maps in your Avenza app. Perhaps the easiest is to add via URL:

  1. Install the Avenza PDF Maps app on your smartphone (available for iOS and Android).

  2. Click the + button (top right) to add a map.

  3. Click the "from URL" option (bottom).

  4. Copy and paste this URL: https://caltopo.com/p/7009 (NOTE: It is not necessary to open the link in a web browser).

  5. Wait for the map to download and process.

  6. Open the map.

  7. View your location on the map.

Here's a YouTube video showing how to add via URL. Copy the URL from the link above to add to Avenza via URL (at 1:27 in the video below):

© 2019 High Altitude Athletics Club (HAAC)