St. Croix 40 Winter Ultra

The St. Croix 40 Winter Ultra is an adventurous winter survival race held in St. Croix State Park, Minnesota.

Participants can choose to compete on foot, skis, or fat bikes, covering a challenging 40-mile course. This event not only tests endurance but also requires competitors to demonstrate survival skills at designated checkpoints along the route. Designed for those seeking to prepare for more demanding races like the Arrowhead 135 or Iditarod, the St.

Croix 40 offers a unique and rigorous experience in a cold winter setting. All registrations are final, with no refunds available. Visit the organization's website for the most recent information.