Dirty German Endurance Fest
Philadelphia, United States • 9 May 2026
Event overview
The Dirty German Endurance Fest is an urban trail ultramarathon held within the city limits of Philadelphia at Pennypack Park. The event offers three distances:
- 50 Miler
- 50K
- 25K
The event typically attracts more than 600 runners. The start location is the Pine Road entry at Pennypack Park, approx. 8750 Pine Road, Philadelphia, PA 19111. Registration closes May 4.
Entry fees vary by distance and registration date:
- 25K: $69 until 12/31/25, $75 until 4/7/26, $79 after.
- 50K: $79 until 12/31/25, $85 until 4/7/26, $89 after.
- 50M: $89 until 12/31/25, $95 until 4/7/26, $99 after.
Refunds are available until 30 days before race day; refunds require a stamped self-addressed envelope and are subject to a $10 fee. After that no refunds or deferrals are offered.
Course, cutoffs and amenities
The course runs along Pennypack Creek in Pennypack Park and is laid out as a figure 8. One loop equals 25K; the 50K is two loops and the 50M is three loops plus a one-mile dog leg on each loop. Surfaces include soft and occasional sandy sections, smooth single track, wider flat gravel trail, and about one mile of paved bike trail per loop. Elevation changes are present but climbs are short.
Time limit for the 50M is 12 hours and 30 minutes. The event provides a full zippered running jacket, commemorative bib, finisher medal, and a hat for ultra finishers. Overall winners and age-group top finishers receive awards. Post-race food is provided by two professional chefs and there is live accordion entertainment. Visit the organization's website for the most recent information.