OSS/CIA 50 Mile Night Run

The OSS/CIA 50 Mile Night Run is a challenging ultramarathon held in Prince William Forest Park, Virginia, a historic site once used to train World War II OSS spies, predecessors to the CIA. The race features a 50-mile distance composed of two laps on a 25+ mile loop primarily on single-track trails, fire roads, and several bridge and road crossings. The event includes a night marathon option starting late at night, allowing runners to complete one loop within a set time.

Aid stations are strategically placed, and crews are restricted to the start/finish area for safety. The course offers a unique blend of natural beauty and historical significance. Visit the organization's website for the most recent information.