Mcrrc Seneca Slopes 9K
Updated
Sunday, December 6, 2026, first start 9:00 AM, in Gaithersburg (Seneca Creek State Park). Distances: 9K. Entry from $20.
- Date
- Sunday, December 6, 2026
- Start time
- 9:00 AM (earliest wave)
- Location
- Seneca Creek State Park, Gaithersburg, DC 20878
- Area
- Maryland Suburbs, Washington, DC
- Distances
- 9K
- Course
- Road or path
- Price
- $20 plus the platform's processing fee
- Next price increase
- None published
- Registration
- Open. Opened February 10, online signup closes Sunday, December 6, 2026
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details.
Register on RunSignup →Race website
Course and race notes
Welcome to the NON-MEMBER registration page for the MCRRC Seneca Slopes 9K! This page may also be used to sign up to volunteer - please see the volunteer tab to the left. This race is part of our free, low-key series for members. Please refer to the Low-Key Race Entry Procedure on our website for more information.
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.