OSS/CIA 50 Mile Night Run
Triangle, United States • 13 Jun 2026
OSS/CIA 50 Mile Night Run : June 13, 2026
The event takes place in Triangle, Virginia, at the Telegraph Road Pavilion in Prince William Forest Park. Distances offered include:
- 50 Miler
- 25M
- 10 Miler
Course and support
The 50 mile distance is run as two laps of a 25+ mile loop. The loop is primarily single-track, with some fire road and several bridge and NPS road crossings. A night marathon option runs a single loop with the same cut-offs used for the 50 mile event.
Two fully stocked main aid stations are located at the start/finish area and at Oak Ridge Camp Ground. Two additional mini-aid stations provide a limited selection of food, water, and Tailwind at the intersections of South Valley Trail with Scenic Drive, and Burma Road with Scenic Drive.
Crews are permitted only at the Telegraph Road Pavilion start/finish area and must be in the park and at the pavilion before nightfall. Pacers may join runners beginning on the second loop from the Telegraph Road Pavilion.
Park information
Prince William Forest Park covers more than 15,000 acres and contains 37 miles of trails. It is described as the largest protected natural area in the Washington, D.C., metropolitan region. Visit the organization's website for the most recent information.