Summer Forest Half Marathon

JUN
27
2026
Choose from 5k, 10k or half marathon through scenic Prince William Forest Park with trails, rolling hills and a mix of pavement. Walkers and virtual runners are welcome; proceeds support Semper Fi & America’s Fund and finishers get a coin, tech shirt and chip timing.
Sat 27 Jun 2026
13 miles 10 kilometers 5 kilometers

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Event overview

The Summer Forest event offers three race distances:

  • 5k
  • 10k
  • Half-marathon

The event takes place at Prince William Forest Park, 18100 Park Entrance Road, Triangle, VA. Walkers are welcome. A virtual race option is available. The event benefits Semper Fi & America’s Fund. Runners receive a finisher’s coin, a technical (Dri-fit) event shirt, and chip timing.

Course and logistics

The 5k is a trail run. The 10k is roughly half trail and half pavement. The half-marathon is mostly pavement (about 60%). The course includes hills; course maps and elevation details are provided by the organizer. Parking is off the main road into Prince William Forest Park, with a meeting area at Williams Ballfield; a latitude/longitude pin is provided by the organizer for navigation.

Water stations and aid:

  • Half-marathon: eight water stations at approximate mile markers 1.55, 3.3, 4.55, 5.6, 8, 10, 11, and 11.65; some stations include Gatorade.
  • 10k: three water stations at approximately miles 1.55, 3.1, and 4.65.
  • 5k: one water station at approximately mile 1.55.

Packet pickup is available at the event. There is no on-site race registration. The organizer posts live results and final results after the race.

Entry, awards and policies

Registration fees vary by distance and increase after May 31; a small additional fee applies on race morning. T-shirts are guaranteed for registrations completed before June 17. The half-marathon has a completion time limit of 3:15. Awards are given to the top three men and women overall and to first and second place in multiple age groups; top three overall finishers are not eligible for age-group awards. The event is held in all weather unless officials announce a change. Visit the organization's website for the most recent information.

13 mi
Half-Marathon
10 km
10k
5 km