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MCRRC Stone Mill 50 Mile Run

Sat November 9, 2024 Montgomery Village, MD 20886 US Directions


50 Mile Run

$68.12 6:00AM EST Price increases after August 13, 2024 at 11:59pm EDT
Open to ages 18+.


Welcome to the MCRRC Stone Mill 50 Mile Run!

This 50 mile trail run showcases the beauty of both the Seneca Greenway and Muddy Branch trails in Montgomery County, Maryland. The course traverses forested, rolling terrain on a primarily single track, dirt trail.  There are small stream crossings.  Most of the course drains well, but parts can be muddy in wet weather.


As a participant in this event, we ask that you commit to volunteer 6 or more hours before race day with your local running club, any local race, work on the trails or any other running-related non-profit organization (such as Girls on the Run, Let Me Run, etc.).  This is done on the honor system.  No proof will be requested.



Stedwick Elementary School
10631 Stedwick Road
Montgomery Village, MD US 20886

Trail Sisters Approved Race

Stone Mill is proud to be a Trail Sisters approved race!

Past Finishers

We proudly present a list of past finishers from the start of the race through 2022: 






Valued Sponsors

Race Contact Info

If you have any questions about this race, please contact the race director at


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