Dahlgren Trail Half Marathon

Dahlgren Trail Half Marathon is a half marathon held in King George, United States, in January. The race covers 13.1 miles on the Dahlgren Railroad Heritage Trail in Virginia, a greenway built along a former railway line. Because the surface is an old railroad bed, it is flat and smooth underfoot, which suits runners who prefer a steady rhythm over climbing.

The route is an out and back. Runners set off from the Bloomsbury Road Trailhead, head east for roughly 6.5 miles to the turnaround, then retrace their steps to the start. That makes the layout simple to follow from start to finish.

Proceeds go to the nonprofit that works to preserve the Dahlgren Railroad Heritage Trail greenway. Hydration follows a cupless approach, with runners bringing their own vessels or using reusable ones, which cuts down on disposable waste.