Washington, DC

Stone Mill 50 Mile Endurance Run

Montgomery County, MD
10631 Stedwick Rd
Montgomery Village, Maryland 20886

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. The race is presented by Montgomery County Road Runners Club.

The 2021 race is an RRCA National Championship Event. The RRCA Championship Event Series is the largest grassroots-organized running series in the U.S. with over 200 races participating that attract nearly 300,000 participants. The goal of the RRCA Championship Event Series is to celebrate and shine a spotlight on well-run, community-focused events and to award top performing runners in the open, masters (40+), grand masters (50+), and senior grand masters (60+) categories for both men and women.

View Full Event Calendar
×

Subscribe to our mailing list