Wild Duluth Races

Downtown - Waterfront, United States • 18-19 Oct 2025

Wild Duluth Races : October 18-19, 2025

The Wild Duluth Races are held in Duluth, Minnesota on October 18-19, 2025. The weekend includes long trail ultramarathons on the Superior Hiking Trail and shorter trail races on nearby sections of trail. Courses run mostly inside Duluth city limits and include rocky and rooty trail segments with views of the city and Lake Superior. The half marathon and 10K courses include a climb of Ely's Peak. Several race start and finish locations are used across the city and nearby parks.

Race formats, limits and fees

  • 100K
  • 50K
  • Half Marathon (13.1 miles)
  • 10K

Entry fees listed for in-person registration: 100K $120 by September 17; $130 after September 17. 50K $95 by September 17; $105 after. Half Marathon $85 by September 17; $95 after (350 runner limit). 10K $45 by September 17; $55 after. The event offers a combined challenge - complete the 50K Saturday plus the half marathon Sunday to earn the WILDMAN or WILDWOMAN designation, or complete the 100K Saturday plus a Sunday race to earn the ULTIMATE WILDMAN or WILDWOMAN designation. Discounted entry is available for runners who volunteer the day before or after their race. Shirts are unisex for 100K, 50K and half marathon; 10K shirts come in men's and women's cuts. Visit the organization's website for the most recent information.

Race information

UTMB 50K UTMB 100K
100 km
Wild Duluth 100k
50 km
Wild Duluth 50k
21 km
Harder 'n Heck Half Marathon
10 km
Terribly Tough 10k
Visit the organization's website for the most recent information.
Trail runs nearby

Enjoy a scenic 5K in Duluth's Chester Park on December 6, following the Chester Rim Trail past waterfalls and a gorge. Part of the Duluth Winter Trailrunning Series, this snowpacked trail run delivers a true winter trail experience.

Take on the Northwoods Winter Trail Marathon or Half in Duluth, with snowshoe options available. Snowpacked fat bike trails in Lester Park and Hawks Ridge deliver city and Lake Superior views for a memorable winter run.

Run a scenic winter 10K on packed fat bike trails through Hartley Park in Duluth, with 10K and snowshoe options. Part of the Duluth Winter Trailrunning Series, this race showcases crisp trails and beautiful winter views.

Run the Frozen Four Hour or a 5K at Lester Park in Duluth on packed snow covered trails. Part of the Duluth Winter Trailrunning Series, the timed event challenges you to log as many miles as possible in four hours.

Experience the Summit North Trail Runs in Duluth, a two day trail running weekend featuring a 5K, 8 mile, half marathon, hill climb and a kids trail run. Scenic singletrack and a welcoming vibe make it perfect for runners of all levels.