Stone Mill 50 Mile Run
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Event details
The MCRRC Stone Mill 50 Mile Run takes place on Saturday, November 8, 2025, in Montgomery Village, Maryland (ZIP 20886). The race distance is 50 miles and is open to participants age 18 and older. The listed venue is Stedwick Elementary School, 10631 Stedwick Road, Montgomery Village, MD. Registration is open for the event.
Course and participant information
The course follows the Seneca Greenway and Muddy Branch trails. It runs on primarily single-track, dirt trail through forested, rolling terrain and includes small stream crossings. Most of the course drains well, but some sections can be muddy in wet weather. Participants are asked, on the honor system, to commit to volunteering six or more hours before race day with a local running club, race, trail work, or other running-related nonprofit; no proof is required. The race recognizes multi-year finishers: 5-, 10-, and 15-year finishers are noted, with a commemorative sweatshirt for 5-year finishers and a commemorative vest for 15-year finishers; details for 10-year finishers are listed as TBD. Valued sponsors include Tailwind Nutrition, MCRRC, and Cloudsplitter Coffee. Visit the organization's website for the most recent information.