MCRRC Seneca Slopes 9K

Headquartered at Seneca Creek State Park in Gaithersburg, Maryland (11950 Clopper Road, Gaithersburg, MD 20878), the MCRRC Seneca Slopes 9K is a 9-kilometer race run by the Montgomery County Road Runners Club. The event is described as part of the club’s free, low-key race series for members, with a volunteer option and a separate non-member registration page. The course runs through the park, though detailed terrain isn’t specified on the page.

Volunteers are needed for roles such as course marshal, water stops, medical support, and course cleanup, underscoring a community, volunteer-driven atmosphere. The event is scheduled for Sunday, December 14, 2025, in Gaithersburg, Maryland. Visit the organization's website for the most recent information.