Prince William Forest Park

Prince William Forest Park, a large National Park Service property near Quantico, Virginia, is one of the most-used venues on the QOC calendar, with courses rotated among several distinct sections of the park over the years.

Turkey Run Ridge's classic ridge-and-valley terrain has also hosted a running of QOC's Bumble mass-start event, which rotates among venues each year; the subtly rolling terrain at Oak Ridge Campground, largely untouched by other park users, has become a newer favorite; and the Pine Grove and Happyland (Camp 5) areas round out the sections in regular use, each offering a full set of classic courses from White through Blue. Deadfall is a recurring issue across the park's sections, sometimes heavier than shown on the map, and unmapped rootstocks are common and not used as controls. Longer courses often use a map flip, and map scale generally varies by course level.

The size and variety of terrain across these sections make Prince William Forest Park suitable for everything from beginner clinics and free kids' string-O courses to the club's biggest annual events.

The park charges a per-vehicle entrance fee (around $20, with cheaper annual and senior pass options), and parking is typically in a designated field or campground loop with a walk of several hundred meters to check-in, so carpooling is encouraged given the limited space.