Trail Running calendar near North Potomac 2025-2026

The Old Dominion 100 Endurance Run, held in Fort Valley, Virginia, is a challenging 100-mile race featuring a diverse course that includes pavement, gravel roads, single-track trails, ATV trails, logging roads, rocks, streams, and mud. This..

Run under the stars in Prince William Forest Park at the OSS/CIA 50 Mile Night Run, honoring the park's OSS legacy. Choose 50 mile or 25 mile on a scenic single track loop with aid stations and true night race atmosphere.

Choose the half marathon or 50K on the shaded, flat Dahlgren Railroad Heritage Trail in King George on August 8, 2026. Enjoy fast footing, a finisher medal and tech shirt plus post race food and drinks.

Take on the rugged MD Heat Trail Race in Elkridge with 25K and 50K options across rolling single track, technical rocky sections, river crossings and more than 2000 ft of vertical gain. Unwind at the post race party with craft beer, real fo..

Hit the forest trails at Dirt Farm Brewing on August 29, 2026 for the Inferno 5k and 10k. Tackle a scenic, technical loop, earn a finisher medal and a Dri FIT shirt, and toast with a glass of Dirt Farm beer. Virtual option available.

Run the Kettle Cooker Five & Dime Trail Race in early October at Glenroy Preserve in Nottingham PA. Choose 5 mile, 10 mile or 25K loops over hilly trails and creek crossings, with chip timing, aid stations, a soft tee and after race food an..

Halloween Horror 5k & 10k returns to Conway Robinson State Forest Park in Gainesville, VA, offering a forest trail race with a Halloween theme. The event features 5k and 10k distances, with the 10k being two laps of the 5k course. The loop..