NK50k

APR
11
2026
Tackle the scenic Northern Kettle Moraine on a point to point trail run through rolling ski trails, rocky singletrack and the forest high point. Choose 50K or 25K with shuttle service, aid stations and post run food at Greenbush Group Camp.
Sat 11 Apr 2026
50 kilometers 25 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

The NK50k is a point-to-point trail run in Greenbush, Wisconsin, listed as the 13th Annual-ish edition. The route follows the Northern Kettle Moraine Ice Age Trail and uses varied trail surfaces, from smooth, rolling ski trails to rocky and rooty singletrack and reaches the highest point in the Northern Kettle Moraine State Forest. The event includes these distances:

  • 50K
  • 25K

The 50K start is at the Ridge Road Trailhead, just southwest of Sunburst Ski Hill. The finish and main event hub is at Greenbush Group Camp. The 25K start is at Crooked Lake.

Support and logistics

Transportation is provided from the finish area to the various start locations. Aid and access to drop bags for 50K runners are provided at the finish (Greenbush Group Camp), at Mile 3.5 and at Mile 25. Additional water is available at or near backcountry shelters along the course. Aid stations will include water, sports drink, Coke, Mt. Dew and assorted standard ultra aid station foods. After finishing, food and refreshments are available at the Group Camp Shelter.

A requested contribution of $13.13 plus tax and UltraSignup fees is listed to cover expenses. Registration closes on April 9. No results will be posted on UltraSignup.com; the organizers describe this as a run, not a race. Visit the organization's website for the most recent information.