2026 NK50K
The 2026 NK50K takes place on April 11, 2026, in the Greenbush and Sunburst area of Wisconsin, USA. This year's event is the 13th Annual-ish NK50K and NK25K, offering a unique trail running experience along the Northern Kettle Moraine Ice Age Trail. The course features a mix of smooth and rolling ski trails, technical rocky and rooty sections, and the highest point in the Northern Kettle Moraine State Forest. The event is expected to take place under spring conditions, with snow still a possibility. Participants can look forward to a point-to-point trail run that challenges both endurance and navigation skills, with a focus on enjoyment rather than competition.
What is the event format?
The 2026 NK50K is categorized as a fun run, not a race. This means that there will be no official results posted on UltraSignup, and participants are encouraged to run at their own pace without the pressure of competition.
What distances are available for this event?
- →50K — Point-to-point, full Northern Kettle Moraine IAT route
- →25K — Point-to-point, starting at Crooked Lake
What is the event schedule?
- →5:30–5:55 AM — 50K runner check-in at Greenbush Group Camp
- →6:00 AM — Bus departs Greenbush Group Camp to Ridge Road Trailhead (50K start)
- →7:00 AM — 50K starts at Ridge Road Trailhead (southwest of Sunburst Ski Hill)
- →9:00 AM — 25K runner check-in at Greenbush Group Camp
- →9:30 AM — Bus departs Greenbush Group Camp to Crooked Lake (25K start)
- →10:00 AM — 25K starts at Crooked Lake
- →Finish — Greenbush Group Camp (both distances)
What aid stations are available?
- →Mile 3.5 — Aid + drop bag access
- →Mile 25 — Aid + drop bag access
- →Finish (Greenbush Group Camp) — Full aid + food and refreshments
What types of supplies are available at aid stations?
Aid stations will stock water, sports drink, Coke, Mt. Dew, and standard ultra aid station foods. Additional water is available near backcountry shelters along the course.
What transportation is provided?
A bus is provided from the finish at Greenbush Group Camp to both start lines. This eliminates the need for participants to arrange a car shuttle.
What should participants bring?
This is a self-sufficient event, and participants are expected to be prepared for the trail conditions. No official race results will be posted, so participants should focus on their own experience and enjoyment.
Are there any awards or finisher rewards?
The event offers a finisher reward: the (Almost) World Famous NK50K Finisher Sticker.
Is registration required?
The event sells out, so it is recommended to register early. Registration details are not provided in the keywords, but participants should check the event's official website for registration information.
What should participants expect in terms of weather?
The event is expected to take place under spring conditions, with snow still a possibility. Participants should prepare for variable weather and be ready for both cold and wet conditions.