Trail Running calendar near Herndon 2026-2027

An in-person event on September 26, 2026 in Brunswick, MD featuring a trail-based 5K and timed 3-hour and 6-hour challenges on a 5 mile loop. Proceeds support Brunswick High School Track and Field equipment.

Trail and bike events at Sherando Park on September 26, 2026 offering a 4 mile trail race, a one mile untimed fun run, and a 5.3 mile mountain bike time trial. Proceeds benefit the I'm Just Me Movement.

Run On The Rocks in Point Of Rocks, MD on September 26, 2026 features 10 mile, half marathon and 20 mile events. The race is chip timed and includes participant shirts, finisher medals and age group awards.

A 5K on the Ma & Pa Trail in Baltimore on September 26, 2026 with in-person and virtual options supporting Cancer Warriors Inc.

A *3 mile* Reunion Run at Hereford High School as part of the Bull Run Cross Country invitational. The race is open to all ages and carries a $10 registration fee, with registration listed from August 24 to September 26.

Experience a supported long distance run on the hardpacked dirt and gravel of the Torrey C. Brown Trail. This twenty mile event serves as an ideal training opportunity for those preparing for a fall marathon.

An annual community 5K run and walk at Agricultural History Farm Park in Derwood, Maryland on September 27, 2026, organized by MD District 15 Democratic Caucus. Offers adult and youth entries plus a free youth option with an accompanying ad..

Experience the full reservoir trail system on this thirteen mile course in Fredericksburg. Runners navigate flowing singletrack and five distinct climbs totaling over nine hundred feet of elevation gain through scenic wooded terrain.

A 110-mile trail ultramarathon in the Massanutten range with about 22,300 feet of elevation gain, a 48-hour limit, required second-half crew support, and multiple staffed and unattended aid stations.

Trail canicross races at Caledon State Park offer two distances, allow leashed dogs, and provide a reusable speedCup; entry fees support Friends of Caledon State Park.

A parkside series of races at Burke Lake Park on October 3, 2026 offering 5K, 10K, half marathon and virtual options, with walkers welcome.

A canicross and trail event on October 3, 2026 in Gordonsville, VA offering competitive 10K and 5K races, a 1.25 mile sprint, a casual dog friendly 5K, and a virtual 5K, with technical trails, three water stations, and a Finisher's Festival..

A community charity race in Gaithersburg on October 3, 2026, featuring cross-country 10K and 5K, a paved 1-mile accessible fun run, and a kids Trike-A-Thon. Proceeds support Comfort Cases and Covenant Life School and include a post-race bac..

Adventure Trail Run in Prince William Forest Park on October 3, 2026 offers a 30 km option plus a 12 hour timed event and a 2 person relay. The course is a 6.5 mile figure eight loop on trails with about 650 feet elevation gain per loop.

A trail 5K at Claude Moore Park in Sterling, VA on October 3, 2026, with in-person and virtual entry options and published registration fees.

A community trail festival in Shippensburg offering a half marathon, 5k, hike, 25 mile bike ride and a free 1 mile fun run for kids, with proceeds supporting the Cumberland Valley Rails to Trails Council.

Join this annual community trail run through the wooded trail network of Potomac Shores. Residents and guests can choose between 5K and 10K courses for a free morning of outdoor activity in Dumfries.

Experience a unique trail run through 1600 acres of former prison grounds at Laurel Hill Park. Choose between 5.4 or 10 mile distances on scenic singletrack featuring historic guard towers and open meadows.

Run or walk the trails at Pohick Bay Regional Park on October 4, 2026, with in-person 5K and 10K options plus several virtual entry choices and tiered registration fees.

District 19 in Anacostia on October 4, 2026 is a run crew led, unsanctioned road and trail event offering 5K, 19K and 19 Mile options with course markers, corral seeding, and a shirt, snack, and medal for finishers.