Forbidden Run Fest

Philadelphia, United States • 9 Nov 2025

Forbidden Run Fest is a trail running event held in Wissahickon Valley Park, Philadelphia, PA, celebrating one of the city's most scenic parks. The race offers three distances: 10K, 10 miles, and a Half Marathon+ (approximately 14 miles). The course features a mix of smooth gravel trails, compacted dirt, and some rocky uphill sections, including the challenging "Mount Misery" segment.

Wissahickon Park spans over 2,000 acres with more than 50 miles of trails, combining natural beauty and historic landmarks. The event is limited to 750 runners, with aid stations spaced every 2-3 miles, chip timing, and a post-race party with awards, live music, and pizza. The race is designed to welcome both road and trail runners. Visit the organization's website for the most recent information.

Race information

14 mi
Half Marathon+ (14 Miles)
10 mi
10 Miler
10 km
Visit the organization's website for the most recent information.
Trail runs nearby

Loopy Looper is an ultra running event held at Cooper River Park in Pennsauken, New Jersey, featuring a fast, flat 3.75-mile paved loop with scenic views of the Philadelphia skyline and river. The race offers multiple distances including 12-hour, 24-hour, and a 101.25-mile ultra, as well as a 4-pers..

The Run for Thorncroft & 1-Mile All-Ability Move-As-You-Please is a community health and wellness event held at Thorncroft Equestrian Center's 70-acre Farm in Malvern, PA. Featuring a 5K trail run, a 5K walk, and a one-mile move-as-you-please option, the event welcomes participants of all levels, in..

The Run the Vineyards - White Horse 10K/5K is an annual running event held at White Horse Winery in Hammonton, New Jersey. Featuring flat and scenic courses through vineyards and country roads, the event offers 10K and 5K races along with a 1-mile walk. Participants enjoy chip timing with instant re..

Ultra Trail DE is a trail running event held in Wilmington, Delaware, on private property owned by Longwood Gardens. The race features a challenging 6-hour format on a roughly 5-mile loop course with about 700 feet of elevation gain per lap. The course offers a mix of scenic singletrack trails, cree..

Run-a-Muck is an annual 5K running and walking event held in the scenic Willistown countryside, supporting local land preservation efforts. Participants can choose to run the 5K or "muck" the cross-country trail, which features diverse terrain, encouraging appropriate attire. The event offers a fest..

The Hainesport Endurance Run is a multi-day ultramarathon event held at Hainesport Township Municipal Park in New Jersey. The race features a flat, paved loop course of just under one mile, certified by USA Track & Field, with an alternate 1.2-mile loop available if needed. Participants can compete..