Trail Running calendar near Parkville 2025-2026

The 12 Hour Adventure Trail Run takes place at Prince William Forest Park near Triangle, Virginia. This challenging event features a 6.5-mile figure-eight loop course on 100% trail terrain, including single track and fire roads, with approximately 650 feet of elevation gain per loop. The course offe..

The Cancer Warriors 5k is an annual running event held in Belair, Baltimore, MD, along the scenic Ma & Pa Trail. The course is a straightforward out-and-back route starting at the trailhead near Independent Brewery, featuring a path that crosses streams and passes under Route 24 before reaching a tu..

The Final Countdown Tribute is an exciting running event hosted by 2 Lowe Run Company at Amani Brewing in Martinsburg, WV. This unique race features a 1.33-mile loop course where participants must complete laps within a progressively decreasing time limit. Starting with a 20-minute lap, the time sho..

Mountain Creek Mayhem is a trail running event held at Pine Grove Furnace State Park in Gardners, Pennsylvania, nestled in the northern Michaux State Forest of the Appalachian Mountains. The race offers three distances: a challenging 50K (approximately 33 miles with 4,700+ feet elevation gain), a to..

Ultra Trail DE is a trail running event held in Wilmington, Delaware, on private scenic trails at 2900 Montchanin Road. The race features a roughly 5-mile loop with about 700 feet of elevation gain per lap, including creek crossings, singletrack, rolling hills, and unique landmarks like a tunnel and..

The Conestoga Trail Run - 10 Tough Miles is a challenging and scenic trail race held annually in Holtwood, Pennsylvania. Known as the oldest trail run on the Conestoga and in the county for over 30 years, this 10-mile course features rugged, rocky terrain with steep hills, multiple small stream cros..

The Bear Trail Half Marathon & 10K is a trail running event held at Lums Pond State Park in Bear, Delaware. The race features two distances: a half marathon (13.1 miles) and a 10K (6.55 miles), both utilizing portions of the Little Jersey and Swamp Forest trails. The course offers a mix of single-tr..

Run-a-Muck is an annual 5K running and cross-country walking event held in the scenic Willistown countryside, supporting local land preservation. Participants can choose to run or "muck" through diverse terrain, making it a fun and challenging outdoor experience. The event features a lively atmosphe..

The Full Distance 10k and 5k is a scenic trail race held at Locust Shade Park in Triangle, VA. Participants can choose between a 5k or 10k course, with the event featuring chip timing, finisher medals, and technical event shirts. The course includes trail segments with some roots and hills, and wate..

The Rick O'Donnell Memorial Ultra Challenge is an annual trail running event held in Mount Airy, Maryland, hosted by the Frederick Steeplechasers Running Club. The 13th edition takes place at Milkhouse Brewery at Stillpoint Farm and features three race options: a 5-mile trail run, a 4-hour challenge..

The Delaware Trail Fest, held at Lums Pond State Park in Bear, Delaware, offers trail running events for all abilities, celebrating the area's scenic outdoor trails. The race features distances of 12 km and 24 km, as well as a 12-hour Lone Wolf solo challenge and a 12-hour 4-person relay. The course..

The Fall Backyard Burn Trail Run at Lake Fairfax Park in Reston, VA, offers runners a scenic trail experience featuring a beautiful lake and extensive singletrack trails. Participants can choose between a 5.1-mile course with 300 feet of elevation gain or a 10-mile option consisting of two laps. The..

The Patapsco Valley 50K is an annual trail running event held at Patapsco Valley State Park near Baltimore, Maryland, with race headquarters at CCBC-Catonsville. The event features two distances: a 50K and a 25K, both available as in-person or virtual races. Runners enjoy a scenic, historic, and wel..

The Halloween Horror 10k is a trail running event held at Conway Robinson State Forest in Gainesville, Virginia. The course features a loop through forest trails with some technical terrain and minor hills, with the 10k consisting of two laps of the 5k route. The event welcomes both runners and walk..

The Fall Backyard Burn Trail Run at Riverbend Park in Great Falls, VA, is a scenic trail running event featuring 5-mile and 10-mile race options. Set adjacent to the Potomac River and near Great Falls National Park, the course offers beautiful riverside singletrack trails with a few short hills and..

The MCRRC Stone Mill 50 Mile Run is a challenging trail ultramarathon held in Montgomery Village, Maryland. The 50-mile course features scenic routes along the Seneca Greenway and Muddy Branch trails, traversing forested, rolling terrain primarily on single-track dirt paths. Runners encounter small..

The Schaeffer Half Marathon and 10K Trail Run, hosted by EX2 Adventures, takes place at the scenic Button Farm in Germantown, Maryland. This event features two distances: a 13.3-mile half marathon and a 6.7-mile 10K+, both offering challenging courses with twisty singletrack trails and wide-open far..

The Rosaryville Veterans Day Trail Race, hosted by Annapolis Striders, is an annual trail running event held at Rosaryville State Park in Upper Marlboro, Maryland. The 16th edition in 2025 features two distances: a 50K ultra and a 20K race. Both courses loop around a 9.5-mile single-track perimeter..

The Fall Backyard Burn Trail Run at Hemlock Overlook in Clifton, VA, is part of a series featuring 5- and 10-mile trail races on scenic Northern Virginia trails. The course runs through Hemlock Overlook Park, a 425-acre area along Bull Run, offering a remote natural setting close to Washington D.C...

The Tuckahoe 25K is an annual trail running event held in Queen Anne, Maryland, featuring a 25-kilometer (15.5 miles) course primarily on single-track and horse trails. The terrain includes runnable hills, some rooty and muddy sections, but is not overly technical, making it suitable for both newcom..