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
Half Marathon
Harder 'n Heck Half Marathon
10 km
Terribly Tough 10k
Visit the organization's website for the most recent information.
Trail runs nearby

Take on the Northwoods Winter Marathon or Half in Duluth on January 3, 2026, tackling packed fat bike trails through Lester Park and Hawks Ridge with sweeping city and lake views. Snowshoe divisions add a fun winter twist for all ability le..

Hit the packed fat bike trails of Duluth's Hartley Park for a winter 10K with a snowshoe option. Join this rugged, scenic race through the heart of the park and feel the thrill of trail running in snow.

Test your winter trail grit with the Frozen 4 Hour or enjoy a brisk 5K on packed snow trails in Lester Park, Duluth. Run as many miles as you can in four hours or race the shorter route for a fun, chilly challenge.

Summit North Trail Runs at Spirit Mountain in Duluth on August 14 and 15, 2026 offer technical singletrack, steep climbs and rocky descents, including the Ely's Tunnel scramble. Races range from a 5K to a heavy half marathon.