Trail Running calendar near Arnold 2026-2027

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.

A community 5K and 1 mile kids run in West Grove PA on September 26 2026 supporting Avon Grove High School cross country with a three-loop grass course and race-day refreshments.

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.

A 10 miles trail race in Holtwood, PA, over rocky, hilly trails with stream crossings and scenic overlooks. Chip timed, with aid stations, a strict 2.5 hour cutoff to mile 7, and one way bus transport to the campground start.

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..

A dog friendly fundraising event at Bellevue State Park on September 27, 2026 featuring a scenic 5K and a one mile Mutt Mile, with race timing, awards for dogs and people, vendors, a costume contest, and merchandise.

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.

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 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.

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.

A fourth-annual trail event at Glenroy Preserve with looped 5 mile, 25K, and 50K courses featuring mixed technical terrain, multiple creek crossings, four aid stations, and post-race food and beer for 21 plus.

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.

Experience a unique trail event at Milkhouse Brewery in Mount Airy featuring a 5 mile race and timed ultra challenges. Complete as many loops as possible over four or eight hours on this scenic farm course.

A community trail event on October 11, 2026 at Bretton Woods Recreation Center in Darnestown, MD offering a 5K trail run and a 1 mile walk. The event raises funds and awareness for addiction prevention, education, and support.

A trail running festival at Lums Pond State Park on October 17, 2026, offering 12K and 24K laps plus 12-hour solo and relay formats, chip timing, aid stations, event clothing, and post-race food.