April 11, 2020

We held out hope that the 2020 JMTR would be able to take place but given the current and predicted course of the COVID-19 pandemic, we have made the very difficult decision to cancel the 2020 JMTR. For 14 years in a row, the JMTR has been a mainstay of the Los Alamos...

March 16, 2020

Even though JMTR is still a couple of months away, in light of COVID-19 the JMTR team feels a race status update is warranted. The COVID-19 situation is evolving quickly and the duration of the impacts are currently unknown. JMTR will closely follow the COVID-19 situat...

January 23, 2020

The 15 mile and 50 km courses will be the same as previous years.  The 50 mile race will have a course change which will result in approximately 2 additional miles of distance compared to the 2019 route.  There will be one aid station relocation which will affect the 5...

May 16, 2019

There is a little more than one week before the race.  Get stoked! We ask that all runners please review the runner’s manual and be familiar with the general course route.  Just a few updates for everyone to be aware of:

Cutoff Times:  

Cutoff times have been clarif...

April 27, 2019

2019 Runner's Manual

The runner’s manual for 2019 is now available..  Download your copy now!


The 50 mile cutoffs are designed for all runners to finish before 10pm.  This equates to about a 21 minute per mile pace.  There are two cutoffs:

  • 12:45pm at the Q...

February 11, 2019

Last year (2018) we were informed by the Valles Caldera National Preserve (VCNP) that our existing race route was not in compliance with the VCNP’s environment and cultural impact assessment. We were told that a new assessment would need to be done before we could run...

May 21, 2018

The thirteenth annual JMTR races were a great success despite the course changes due to fire restrictions. Thanks to all the runners for coming out, running hard, having fun and thanking our awesome volunteers! The results have been posted on UltraSignup:

15 mile result...

April 30, 2018

You have questions, we've got answers! The JMTR 2018 Runners Manual has all the information you need to know to plan and execute your perfect race this year. Get the manual  and the course maps/profiles now and get stoked! 

April 26, 2018

This message is to update you on the 50 mile course.  The current forest conditions along with the ongoing draught has forced us to make some additional modifications to the 50 mile course.  The Los Alamos area has had an extremely dry winter with almost no snow....

April 26, 2018

This message is to update you on potential changes to the 50 km course.  The current forest conditions along with the ongoing draught has forced us to make contingency plans for the 50 km course in the event that fire restrictions force the closure of the National Fore...

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JMTR 2020 Course Update – January 22, 2020

January 23, 2020

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