"No need to run our races in Lederhosen"

               Upcoming races

Naked Bavarian 3/3

Trail 20M & 40M


Naked Prussian 3/31

Trail 26.2 & 50M


Boulder Field 100k/50k 9/15


HCM, helping families affected by cancer

Uberendurancesports  ---  a joint venture of a runner and a pastry chef

Dirty German Endurance Fest

25K, 50K & 50 Miles

Pennypack Park, Philadelphia, PA

Saturday, May 11th 2019
700 Runner Limit (sold out 3 years in a row)

proudly supports Pennypack Park

This race takes place within the city limits of Philadelphia, and therefore qualifies as an urban ultramarathon, but you will not find things like traffic, noise, bad air quality & concrete buildings here.
This race course is located within Pennypack Park, a hidden gem within Philadelphia's Fairmont park system. The park stretches along Pennypack creek for about 7 1/2 miles, and is home to many trails, huge old trees, birds & other wildlife.  I run here all the time, and never get tired of it.

This race offers a perfect opportunity for runners  to enter the exiting world of trail (ultra)running . This is a good course to run your first ultra or a PR if the weather cooperates. We accomplish this by providing a course that is well marked  &  not too technical.The course features different surfaces. Some soft and occationally sandy spots along the creek, a lot  of smooth single track as well as some wider flat gravel trail. Every loop includes about 1.5 miles of  paved bike trail.  There is some elevation, but the climbs are short.
This course is very runnable and easy by trail running standards, which as experienced runners will know, can make it even more challenging, because it will not give you many opportunities where you can/should hike.

Dirty German Swag

Our 2019 1/4 zip performance top (multiple/different color options)

Start Time:

Number pickup starts at 6:30AM.
Start Times !!!
50 Miler starts at 7:30 AM
50K starts at 8:00 AM
25K starts at 8:30 AM


Awesome single track, Mile 12 ( infamous twisty Rollercoster section)


Pine Road Entry at Pennypack Park, 8750 Pine Road, Philadelphia, PA 19111

View map of start/finish area (bird's eye view)

Coursemap with aidstation locations/distances

Area Road Map

  Registration Fees: 

25K : $49 till 2/15         $55 till 4/15   $59 4/16 until sold out

50K: $69 till 2/15         $75 till 4/15   $79  4/16 until sold out

50 Miler: $79 till 2/15         $85 till 4/15   $89  4/16 until sold out

Online reg. will close 5/6 11:59PM. Sold out for the last couple of years, there will be no raceday registration!!!

Refund policy:

Till April 11/:
Mail us a stamped self-addressed envelope to receive a refund minus $5 to:

c/o DirtyGermanRF
2137 Old Lancaster Pike
Reinholds, PA , 17569

No refunds after April 11th, no exeptions. However we do allow bib transfers. You need to email the RD at stephanweiss@comcast.net by May 6th to authorize and finalize the transfer.

weather house


Every runner will receive a upper garment (tbd), no advertising on the back. Will be gender specific!!! Every finisher will receive a finisher award, all 50K and 50 Mile finishers will receive an embroidered tech hat in addition.


Winner  overall &Winner Masters (age 40+)  male and female
will receive a cuckoo clock.

Top 3 in age groups: 29 & under, 30-39, 40-49, 50-59 and winner 60+ 

These unique awards come from the Black Forest of  Germany.  They are german weather houses. They can predict future weather  pretty much as reliable as "Glen Hurrican Schwarz" . Here is how they work:              There is a gut string inside which reacts to all changes in air humidity. Depending on wether the air is dry or humid, the gut string changes it's position and twists more or less, so that the female turns outside when it is dry (predicting nice weather) and the male, when it is humid. We will go 3 deep for 18-29, 30-39, 40-49, 50-59 and winner  60+ .

Time Limit:

12 hours & 30 min.  This is a firm time limit. The park closes at 9 Pm, and we need to be all cleared out by then, therefore we can not go out on the course and look for runners in the dark. You have to make it to the 35 Mile mark by 8 hours, otherwise you can not continue. 

more singletrack


 The average temp at the start is in the 50ies. Average high 70. The course is mostly  shaded.

Aid Stations:

Aid Stations are about 3-4.5 Miles apart and are staffed by ultra trail runners.50k and 50 Mile runners should carry a bottle to keep hydrated between aidstations. Gatorade and water will be available at all the aidstation.  Also available:

PBJ Sandwiches Grilled Cheese (Aidstation 4 only)

Sodium tablets
Chocolate Chip cookies
Cooked potatoes
potatoe pancakes (Aidstation 4 only)

Our Aidstations rock.

Our aid stations rock and are staffed by local ultra-runners

Octoberfest Aidstation:

This aid station will focus on german carbs like  pretzels ...  served by the St. Pauli girls. If you decide your PR is not gonna happen today, take a break right there and enjoy the view.

St Pauli Girls

Along the Pennypack Creek within the limits of Pennypack park. Course is basically a figure 8 consisting of mostly single track trail and a short paved bike path section.One loop is 25K. 50 K runners will run it twice, 50 mile runners will run a mini loop first and then run the main loop 3 times. No traffic at all. It's actually pretty cool , that you run miles and miles within the city limits of Philadelphia without seeing a house or a car at all. 

Coursemap and elevation chart

(please note , GPS data usually shows a shorter distance due to leaf coverage and inaccurate elevation changes)

Post Race:
There will be no official award ceremony. We will hand out the awards as you cross the finish line.

However , we encourage you to stick around, relax, talk running, refuel.  

Click on link to view hotels nearby the race.

There is a casino and an amusement park nearby, so these hotels fill up quickly, therefore we recommend making reservation early.

Female Winner

Female Winner 2011