WhistleStop Marathon & Half-Marathon

OCT
10
2026
Experience a scenic autumn run from Iron River to Ashland on Lake Superior’s south shore. Choose from a marathon, half marathon, 10K, or 5K on a course known for its gradual decline and beautiful fall colors.
Sat 10 Oct 2026
Marathon Half Marathon 10 kilometers 5 kilometers

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Tamarack Health WhistleStop Marathon, Half-Marathon, 5K & 10K

The Tamarack Health WhistleStop Marathon is an annual autumn distance running event held in Northern Wisconsin. The course featured in the full marathon distance begins in Iron River and travels toward the finish line located in Ashland, on the south shore of Lake Superior.

Participants run on a course that follows a gradual decline, offering views of the local countryside and fall colors. The event is supported by volunteer-staffed aid stations along the route. Because of its layout and timing, the race is often used by runners attempting to achieve a personal record or to reach a qualifying time for the Boston Marathon.

The event offers several race distances for participants:

  • Marathon
  • Half-Marathon
  • 10K
  • 5K

All race distances are scheduled to take place on the same day. Registration for the event is tiered, with pricing increases occurring at several intervals throughout the year leading up to the race in October. The finish area and event hub are centered at the Bay Area Civic Center on Depot Drive in Ashland. Visit the organization's website for the most recent information.

Marathon
Marathon
Half Marathon
Half Marathon
10 km
10k
5 km