3H Trail Half Marathon + DHRT 50K

Prepare for an invigorating challenge at the 3H Trail Half Marathon and DHRT 50K on Saturday, August 8, 2026, in scenic King George, Virginia. This unique event, aptly named the "3H Half" for its typically Hot, Hazy, and Humid August conditions in Virginia, offers a distinct test of endurance. Runners will embark on an unforgettable journey along the historic Dahlgren Railroad Heritage Trail, a converted railroad bed providing a largely flat and fast course. With options for a 13.1-mile half marathon or a demanding 50K ultra, this race promises a memorable summer adventure for all participants.

The courses are beautiful, scenic out-and-back routes run almost entirely on the Dahlgren Railroad Heritage Trail. Expect solid footing on surfaces ranging from dirt, gravel, grass, and pine needles, with minimal roots, though some sections may feature bog boards requiring extra caution. While largely flat, the trail includes gradual inclines and declines, reflecting its railway origins. One of the most appreciated aspects is the nearly 100% shade provided by the tree canopy, a welcome feature for August racing. The 50K boasts seven well-stocked aid stations approximately every four miles, offering water, Gatorade, and food, including PB&J sandwiches at key points. The half marathon also provides ample hydration with water and Gatorade stations. Embracing sustainability, the event is cupless, requiring runners to carry their own hydration vessels or use a provided reusable SpeedCup.

Starting and finishing at the University of Mary Washington-Dahlgren parking lot, the event ensures convenient access for runners. Known for its excellent organization, the 3H Trail Half Marathon and DHRT 50K has a strong reputation, even holding some of the fastest trail 50K times in the U.S. in previous years. Participants praise the beautiful trail, the well-organized logistics, and the satisfying post-race food. All finishers receive a choice of a technical tank top or t-shirt and a custom medal, with cash prizes available for top competitors. Typical race day conditions in August include highs around 84°F and lows around 66°F, with a 14% chance of precipitation, adding to the inherent challenge and unique character of this beloved trail race.