Trail Running calendar near Upper Marlboro 2025-2026

The Conestoga Trail Run - 10 Tough Miles is a challenging trail race held in Holtwood, Pennsylvania, known for its rugged terrain and scenic views. Celebrating over 30 years, this event features a hilly course with rocky paths and stream crossings, making it suitable for experienced trail runners ag..

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 5 Mile Trail Run and Ultra Challenge is an annual event held in Mount Airy, Maryland, organized by the Frederick Steeplechasers Running Club. Taking place on October 12, 2025, it features three challenging race options: a 5-mile trail run, a 4-hour challenge, and an 8-hou..

The Wilderness Run 10k is a scenic cross-country race held at Wilderness Run Vineyard near the historic Chancellorsville and Wilderness battlefields. The event features both 5k and 10k courses with hills and trail terrain, offering a challenging and picturesque experience. Participants receive a fin..

The Fall Backyard Burn Trail Run at Lake Fairfax Park in Reston, VA, offers runners a scenic and challenging experience on a 5.1-mile singletrack course with minimal pavement and about 300 feet of elevation gain per lap. Participants can choose to run one lap (5 miles) or two laps (10 miles), with t..

The Patapsco Valley 50K is an annual ultramarathon held in Baltimore, Maryland, at Patapsco Valley State Park. The event features a scenic, well-marked trail course with options for 50K and 25K distances, including virtual categories. Runners receive high-quality event shirts, finisher awards, and e..

The Halloween Horror 10k is a trail running event held at Conway Robinson State Forest Park. Participants can choose between a 5k or 10k race, with the 10k being two laps of the 5k course. The course features forest trails with technical terrain and minor hills.Runners receive a finisher’s medal, a..

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 running event set in Montgomery County, Maryland, showcasing the scenic Seneca Greenway and Muddy Branch trails. Participants navigate a primarily single-track dirt course featuring forested terrain and small stream crossings, with some areas p..

The Schaeffer Half Marathon and 10K Trail Run, organized by EX2 Adventures, takes place at Button Farm in Germantown, Maryland. The course features twisty singletrack trails and open farm fields, offering a scenic and challenging experience for runners. The half marathon covers approximately 13.3 mi..

The Rosaryville Veterans Day Trail Race, held annually at Rosaryville State Park in Upper Marlboro, Maryland, offers challenging 50K and 20K trail runs through scenic wooded trails and meadows. The 50K consists of 3.25 loops on a 9.5-mile single-track perimeter trail with rolling hills totaling abou..

The Fall Backyard Burn Trail Run at Hemlock Overlook in Clifton, VA, is a scenic trail running event featuring 5-mile and 10-mile race options. Set in a 425-acre park along the historic Bull Run, the course offers a mix of hiking trails, old dirt roads, stream crossings, and open fields with natural..

The Tuckahoe 25K is an annual trail running race held in Queen Anne, Maryland, organized by Algonquin Ultras Inc. The event features a 15.5-mile course primarily on trails, including single track and wider horse trails, with some hills, roots, and muddy sections. Runners can expect variable weather..

The Hex Hollow Half is a running event taking place in Glen Rock, PA, featuring a half marathon (13.13 miles) and a shorter 6.66-mile option. The course, set in Spring Valley Park, offers a scenic experience through meadows, forests, and challenging terrain, including stream crossings and elevation..

The Fall Backyard Burn at Laurel Hill is a trail running event held at Laurel Hill Park in Lorton, Virginia, just south of the Capital Beltway. Participants can choose between a 5.4-mile course (one lap) or a 10-mile course (two laps), both featuring a mix of forested singletrack and open meadows on..

The Winery at Bull Run Turkey Trot is a scenic trail run held at the Manassas National Battlefield, featuring 5k and 10k options. Participants enjoy running through historic Civil War sites on dirt trails, cross-country paths, and gravel terrain, with some hills along the course. The event benefits..

The 21st Annual Catonsville High School XC Turkey Trot is a cherished community event celebrating health and wellness. Scheduled for November 27, 2025, this event features a 1 Mile Family Fun Run and a 5K race, both of which are chip-timed. Participants can enjoy a family-friendly atmosphere while s..

The Lake Anna Turkey Trot Half is a scenic and challenging race held at Lake Anna State Park, featuring a half marathon, 10k, and 5k courses. The half marathon is an out-and-back trail race with a 3-hour and 15-minute time limit, while the 10k and 5k courses combine trail and paved roads. Participan..

The 27th Milford Cross Country Booster Reindeer Stampede 5k is set to take place at Killens Pond State Park in Felton, Delaware. This annual event features both a competitive walking category and a run/walk option, catering to participants of all abilities. Registration is available at a reduced fee..

Devil Dog Ultras is a trail running event held in Prince William Forest Park, Virginia, featuring 50K, 100K, and 100-mile races. The course primarily consists of single-track trails with some fire roads and rolling hills, with no significant climbs. Runners complete multiple loops, with aid stations..