C&O Canal 100

The Inferno 5k & 10k at Dirt Farm Brewing in Bluemont, Virginia, challenges runners with a forest-trail course behind the brewery. The 5k is a single loop; the 10k doubles back on the same path, featuring tree roots, rocks, and elevation changes that test footing and lungs. Expect steep climbs, rapi..

The Final Countdown Tribute is a unique running event held at Amani Brewing in Martinsburg, WV. The race features a 1.33-mile loop on a smooth, well-maintained grass trail with gentle hills. Runners must complete each lap within a decreasing time limit, starting at 20 minutes and shortening by 20 se..

River's Edge Endurance Challenge is a nonprofit running event held at Brunswick Middle School, Maryland. The lineup includes a 5K (3.1 miles), a 3-Hour Endurance Race, and a 6-Hour Endurance Challenge. The largely trail-based course runs on the River's Edge Trail System, with about a mile on school..

The Fall Harvest 5k is a scenic trail race held at Claude Moore Park in Sterling, Virginia. Set amidst the vibrant colors of autumn, the course features forest paths and leaf-covered trails, offering a picturesque experience for both runners and walkers. This event is part of the Run Your PRCS Parks..

The Rick O'Donnell Memorial 5 Mile Trail Run & Ultra Challenge takes place at Milkhouse Brewery at Stillpoint Farm, 8253 Dollyhyde Rd, Mount Airy, Maryland. Hosted by the Frederick Steeplechasers Running Club, the event features three options: a 5-mile trail run, a 4-hour challenge, and an 8-hour ul..

Boulder Dash at Pinesburg Quarry is a running event hosted by Martin Marietta in Williamsport, Maryland. It offers a 5 Mile Challenge, a Family Friendly 5K, and a 1 Mile Fun Run for all levels. The 1 Mile Fun Run and 5K travel on rolling roads and packed gravel around the quarry; the 5 Mile goes int..