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

Join the Chester Rim 5K at Chester Park in Duluth for a scenic loop along the Chester Rim Trail, dropping into waterfalls and a gorge. This winter trail run on packed snow offers a beautiful, challenging outing for trail lovers.

Run snowy fat bike trails in Duluth at the Northwoods Winter Trail Marathon and Half Marathon, with elevated routes offering city and Lake Superior views. Snowshoe divisions and series rewards make this a memorable winter challenge.

Run a scenic winter 10K through packed fat bike trails in Duluth's Hartley Park, with a snowshoe division for a fun snowy twist. Part of the Duluth Winter Trailrunning Series, this race delivers winter trail vibes and friendly competition.

Take on the Frozen 4 Hour & 5K in Lester Park, Duluth on Saturday February 7, 2026. Choose a speedy 5K or a 4 hour endurance challenge on packed snow trails with a festive finish.