Mellow Full
- When
- Fri, Sep 11, 2026, 12:00 AM
- Where
- Gregory, US
- Distances
- 10K · Half Marathon · Marathon · Ultra Marathon
- Terrain
- TRAIL
- Price
- 44–275 USD
- Elevation gain
- 1524 m
- Typical weather
- Mild
- Organizer
- RF Events
About
The Happening 100K kicks off on Friday, September 11, 2026, in Gregory, coordinated by RF Events. This four‑loop wilderness run navigates Potawatomi and Waterloo-Pinckney trails, offering ~5,000 ft (1,524 m) total climbing.