MCRRC Stone Mill 50 Mile Run

Sat November 14, 2020 Montgomery Village, MD 20886 US Directions
Pre-Registration/ Waitlist Only

50 Mile

6:00AM EST

Like all of you, we are carefully watching the situation with COVID-19 and monitoring guidance from the CDC and state and local authorities as it pertains to events and large gatherings of people.  As with any event of this nature, the status of Stone Mill 50 will be determined by our ability or inability to obtain permits.

Registration is OPEN for pre-registration waitlist system only. By registering, you are securing your spot to participate, should the race be able to be held. A $0 authorization transaction will be run on your credit card. You will not be charged for the registration until the race is able to secure permits.  Once the race is determined a "go" and your card is charged, all sales are final and there are no refunds.

We hope to see you in November!


Welcome to the registration page for the Montgomery County Road Runner's Stone Mill 50 Mile!

The Stone Mill 50 is a 50 mile trail run on the Seneca Greenway and Muddy Branch trails in Montgomery County, Maryland.


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

Additional race information can be found at

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

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