Trail Running calendar near Cabin John 2026-2027

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 12 hour trail event at Prince William Forest Park near Triangle, VA, run on a 6.5 mile figure eight loop with 650 feet of elevation gain per loop. Options include a 30 km race, a 12 hour entry, and a 2 person relay.

A trail 5K at Claude Moore Park in Sterling, VA on October 3, 2026, featuring forest and leaf-covered trails and serving as the fourth race in the Run Your PRCS Parks timed series. In-person and several virtual entry options are available.

Trail races at Glenroy Preserve on October 4, 2026 offering 5 mile, 25K, and 50K loops with mixed and technical terrain, multiple creek crossings, four aid stations, chip timing, and post-race refreshments.

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.

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.

Participate in a 10 km run through the scenic Black Hill Regional Park in Boyds. This low key event offers a straightforward racing experience for both club members and the general public in a natural park setting.

The Annual Boulder Dash at Pinesburg Quarry in Williamsport, MD on October 17, 2026 offers three distances : 5 miles, 5K and 1 mile, and the quarry will be closed during the event for safety.

Evenstar Ultras is a timed trail event at Shenandoah River State Park with 3, 6, 12 and 24 hour options on a 3.48 mile loop. Frequent returns to the main aid station reduce the need to carry heavy gear.

An in-person 5 km and 10 km event at Bluemont Park in Arlington on October 17, 2026, with flat courses and walker-friendly access. Virtual entries are available with several medal and shirt options.

Experience the scenic singletrack trails of Lake Fairfax Park with 5 mile and 10 mile race options. Enjoy a community atmosphere with post race breakfast and a dedicated program for children.

A 5.25 miles trail race at Gunpowder State Park on October 18, 2026, with a steep opening climb, single track sections, and a faster finish. The event is donation based and offers on site registration.

Trail races of 50k and 25k take place in Patapsco Valley State Park on October 24, 2026 with in-person and virtual options. All entrants receive event apparel and a finishers award, and virtual runners have Oct 24 to Nov 24 to complete thei..

A marked trail competition in Prince William Forest Park offering a 25 km one loop and a 50 km two loop option with on course aid stations. Entry opens September 15, 2026 and the field is limited to 110 runners.

Trail races at Conway Robinson State Forest on October 25, 2026, offering 5 km and 10 km trail distances plus virtual options with medal and shirt choices; walkers are welcome.