OSS/CIA 50 Mile Night Run

The OSS/CIA 50 Mile Night Run is a unique endurance event taking place in Prince William Forest Park, Virginia, on June 14, 2025. This race honors the historical significance of the park as the training ground for the Office of Strategic Services (OSS), the precursor to the CIA. Participants will tackle a challenging 50-mile course, consisting of a 25+ mile loop run twice, primarily on single-track trails.

The event also features a night marathon option, allowing runners to experience the trails under the stars. Aid stations are strategically placed throughout the course, and crews are permitted only at the start/finish line for safety reasons. Visit the organization's website for the most recent information.