Frederick Running Festival Half Marathon 2025. Saturday, may 03, 2025 06:30 am sunday, may 04, 2025 04:00 pm frederick running festival. Tucked away in the suburbs of washington, d.c., the frederick running festival is one of the hidden gems of the running community.

The kids fun run will be held at 4pm on sat. The race will begin and end at the frederick fairgrounds.