Ultra Running Hub Trail 50mi
tBunk Endurance Challenge 50 Mile
148 days away
80km Distance
2,300m Elevation
7.5 Grit Score
Hardcore Level
Vertical Intensity 29 D+/km
Moderate undulations. Requires consistent effort across varying grades.
The Aid Station
Course-specific beta from the community
This is a rolling course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Course Intelligence
OPENFREE MAP (LIBRE)Course Notes
9.19 miles loop with 1,500’ of elevation, using the Nordic trail system in the Southern Kettle Moraine State Forest.