The PB&J is a tasty run.

Keith Knipling

PB&J 50k

A runnable 50 km run comprised of two loops on the easy rolling trails of Prince William Forest Park.

  • Sat Oct 30, 2021
Start location
Start time
  • 8:00 am
  • 50 km
Total ascent/descent
  • 2,500 feet
Aid stations
  1. Mawavi Road (7.3 miles)
  2. Turkey Run Education Center (TREC) (13.0 miles)
  3. Start/Finish (16.0 miles)
  4. Mawavi Road (23.3 miles)
  5. Turkey Run Education Center (TREC) (29.0 miles)
GPX file
Print or download
Sunrise & sunset
  • Begin civil twilight 7:07 am
    Sunrise 7:32 am
    Sunset 6:13 pm
    End civil twilight 6:38 pm
What to wear
In charge
Course records
  • Dan Fogg
    4:04 (in 2017)
    Krista Offield
    4:57 (in 2017)

The 6th annual running of the PB&J 50K Fat Ass is scheduled to be held on the trails in Prince William Forest Park on Saturday, Oct. 30, 2021. The event was cancelled in 2020 due to the coronavirus pandemic, so we are glad to be back for 2021!

The start/finish area is at the Telegraph Road Pavilion, located a short distance past the park’s visitor center, within a half mile of the entrance to the park off of Joplin Road near I-95.


For 2019, the PB&J 50k runners saw a slightly altered course and a new start/finish location within Prince William Forest Park. The 2021 runners will use the same course.

For those of you who have raced at the pre-2019 iterations of this 50k, virtually all of the loop portion of the course on the far side of the suspension bridge from the start/finish area is the same on the current course as it was in previous editions of the PB&J. What changed is the approach to that landmark bridge from the start, and then the return from the bridge to the finish of each loop. The singular change on the loop portion of the course is the location of the Mawavi Road aid station, which moved down to the point where the South Valley Trail crosses that gravel road. This eliminated the out-n-back climb to the aid station on each loop.

Why the “PB&J 50K”? The name of the race is an homage to the late, great training run series hosted on local NoVa trails by Toni Aurilio and Jo Leigh Lockner. The intent of this event is to provide an organized 50km race on a relatively easy course in the DC area, and also to provide a great training run opportunity on some rolling, non-technical trails.

Aid StationSplitCumulativeCutoffMap
Mawavi Road7.3 mi7.3 mi
Turkey Run Education Center (TREC)5.7 mi13.0 mi
Start/Finish3.0 mi16.0 mi12:30 pm
Mawavi Road7.3 mi23.3 mi
Turkey Run Education Center (TREC)5.7 mi29.0 mi
  • The start time will be at 8 AM.
  • Pre-race briefing will start at around 7:50 AM, so arrive and prepare early.
  • The briefing will be held at the start line (on the pavement adjacent to the large shelter at Telegraph Road).
  • The race will consist of two 16-mile loops.
  • There is a 4 hour and 30 minute time limit for loop one.
  • The time limit for the full distance will be 9 hours.
  • The course will be marked.
  • There will be two aid stations located out on the course.
  • There will be an additional mid-way aid station set up at the start/finish.
  • Rest rooms at the start/finish, and at the second aid station.

Both loops are the same; you should print out and bring with you the marked map, and the simple turn directions listed below. Bear in mind, even though the course will be marked with blue ribbons, you should do your homework, and make yourself aware of the general nature of the course and the trails used for the PB&J 50k.


Enter using the VHTRC’s online signup. There is no formal entry fee - this is a “Fat Ass” event. That said, you will be assigned a “tribute” item to bring for common aid. You will need to pay the park entrance fee ($10 per vehicle) at the Visitor’s Center at Pine Grove. If you have a National Park pass, you can display that in lieu of making day visitor payment.

For those wondering how quickly the event may hit its limit of 110, the sign up for the 2018 race opened on August 31st and it closed at that 110 runner cap on September 11th. In 2019 entry opened on Monday September 2nd and closed in a week (the cap of 110 was reached on Monday September 9th).


Missed out on the opportunity to sign up but you want to come out for PB&J Day? Good - volunteer slots are available! Click here to sign up and email the Race Directors if you have questions.

Telegraph Road: Start/Finish Aid Station
Captain (all day):
7:00 a.m. - 10:30 a.m. (includes runner check-in):
10:30 a.m. - 2:00 p.m.:
2:00 p.m. - close:

Mawavi Aid Station
Captain (all day):
7:30 a.m. - 10:30 a.m.:
10:30 a.m. - 1:30 p.m.:
1:30 p.m. - close:

TREK Aid Station
Captain (all day):
8:30 a.m. - 11:30 a.m.:
11:30 a.m. - 2:30 p.m.:
2:30 p.m. - close:

Course Sweeps
12:30 p.m. (must sweep entire course):

Costume Contest

New this year, due to the unique timing of the race, we’re having a Halloween costume contest! Special prizes for:

  • Overall best costume
  • Best costume to run in
  • Most timely
  • Most creative

Good luck!

Last updated September 15, 2021

Club Event Participant Medical Policy

This is an event with very real risks to your well being. The VHTRC does not provide medical care for runners at this event. Runners are responsible for their own health, safety, and well being at this event. No doctors, nurses, or emergency medical technicians, or anyone with any medical training are available along the course, at any aid station, or at the finish. The club does not supply any medical goods or services, including bandages, splints, antiseptic, or Ibuprofen or any other drugs to maintain the health of runners. Physical, medical, and emergency care is the runners' responsibility. In case of an emergency, we will endeavor to get local emergency personnel to an injured runner as soon as possible. Since most of our events are in remote areas, medical care may be far away in distance or time. Each year, runners finish — or are forced to drop out — with scrapes, deep cuts, hematomas, dislocations, and sprains. Runners have experienced cuts, bruises, bee stings, and asthma attacks. This is an event with very real risks.