MCRRC Stone Mill 50 Mile Run
About this race
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.
Volunteer!
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.
Pick your distance
Trail running
50 Mile Run
Typical race-day weather
Based on 7 years of Open-Meteo archive data for this event's race dates in Montgomery Village, plus the 3 days either side.
The sun rises at 6:43 AM and sets at 5:01 PM local time (EST) in Montgomery Village on November 7, 2026 — 10h 18m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Results — MCRRC Stone Mill 50 Mile Run
Other races near Montgomery Village
Different organizers, within 40 miles, in the next three months
Montgomery Village Jack-O-Lantern 5K and 1-Mile Fun Run
MoCo CARES Charity Race
MCRRC Run Under the Lights
MCRRC Turkey Burnoff 5 and 10-Mile Race
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 3 Montgomery Village events
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