Herndon
Trail Running Calendar near Herndon 2026-2027
Explore the top trail runs near Herndon for 2026-2027! We've gathered 77 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
January 2027
A 5K and half marathon along the Chesapeake and Ohio Canal in Georgetown on January 17, 2027, with in person and virtual options and walkers welcome.
In-person 5K, 10K and half marathon at Carderock Recreation Area in Bethesda on January 23, 2027, with virtual options and series points.
February 2027
Scenic 5K, 10K and half marathon along the Potomac in Potomac MD on February 13, 2027 with virtual options; park entrance fee not included and walkers are welcome.
In-person 8k and 16k races along the Potomac River and C&O Canal path in Potomac, MD, with virtual options and post-race waterfall views.
March 2027
An annual eight-hour timed trail event at Little Bennett Park near Clarksburg, MD, run on a mainly single-track 5.5 mile loop.
Half and full marathon in Georgetown on March 14, 2027 with a Boston qualifying full marathon along the C&O Canal and virtual participation options.
Test your limits in Lorton at this elite backyard marathon featuring dedicated day and night loops. With a limited field of 65 runners and a chef supported aid station, it is the perfect venue for a personal best.
April 2027
A 50 mile trail race near Clifton, Virginia on April 4, 2027, run over forested, rolling terrain in spring. Entry opens October 1, 2026; the race has a 13-hour limit and a $125 entry fee.
A 100 mile race along the C&O Canal towpath near Knoxville MD with a 40 mile loop plus two 30 mile loops, multiple aid stations, and a Camp Manidokan start.
May 2027
Marathon and half marathon on the C&O Canal Towpath at Fletcher's Cove in Washington DC on May 1, 2027, featuring a mostly crushed gravel out and back course with river views.
A 24 hour Backyard ultra on Mason Neck with a 4.167 mile loop, 100 mile limit, single aid station, and a field capped at 100 runners.
June 2027
Backyard-style ultra in Knoxville MD with repeating 4.167 mile laps every hour until one remains, plus a concurrent 1 mile Mortals edition.