Saturday, Sep 25, 2021 @ 6:00 AM

12 Hour - Adventure Trail Run

Prince William Forest Park

Triangle, VA 12hrs, 2 Person Relay

Registration closes: Wed, Sep 15 @ 11:59PM


In light of the great certainty with the COVID-19 and quickly changing guidelines (CDC, local, state, and federal government levels), we will be making adjustments to our registration process for our remaining trail races for 2020. Effective immediately, our races will have an open registration directly to a WAITLIST. You will be able to register for an AEI trail race WITHOUT risk. This will allow us, as organizers, and you as trail runners maximum flexibility to sign up for our races with no risk. This will also allow for maximum economic flexibility for everyone considering the possible economic constraints that we all may be seeing. Once a race is cleared by our permitting Agencies, we will inform everyone on the WAITLIST to join the race officially. You will receive emails updates 6 weeks, 4 weeks, and 2 weeks out regarding status of the trail races.
See you all on the trails.


Athletic Equation will be hosting its 14th Annual 12-Hour ATR on 19 SEPT 2020. The field will be limited to 100 Runners. We will be building off of the successes of our other ATRs. In our first 13 runnings, participants have claimed over 25,000 miles on the Prince William Forest Park trails. This year's 12-HR ATR is combined with the "ICY-8" HR ATR, the MT TAMMANY 10!, 24-HR ATR and the OSS/CIA 50M Night Run to conclude the 2020 AE MINI Ultra Trail Series.  Bottom Line: Not the fastest, but the runner with the most mileage WINS THE SERIES!!! Imagine That....


The 12-HR ATR will be held in Prince William Forest Park (PWFP), just outside of Triangle, VA in Prince William County. The Park is 17,000+ acres and has over 40 miles of trails. The course will be on a DIFFERENT set of trails than our 24-Hour ATR. The course will be a 6.5 mile looped figure eight (8). It is designed to challenge the novice and experienced trail runners alike. It will be 100% trails, some single track, and some fire road. The approximate elevation gain/loss is 650 feet / per loop. The terrain will have undulating hills with some nice ascents and descents to keep trail runners on their game and keep them honest. There will be rocks; there will be roots, dirt, and mud if it rains. There will be two aid stations. The primary aid station will be the Start/Finish. It will have a plentiful array of sustenance (food) to cover everyone through out the event. The second aid station will ONLY have H2O. The 12-HR is concluded with the awards ceremony and Post-Race Meal for participants and crews.

Local time: 11:19 AM


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