To register for the St. Croix 40 Winter Ultra, simply click the Ultra Signup banner above. You will be taken to Ultra Signup to complete the rest of the registration process.

Registration will be capped at 135 participants. In order to maintain a good balance between bikers and foot/ski participants, we are initially limiting each category to the following numbers when registration opens:

  • Ski – 15 participants
  • Foot – 60 participants
  • Bike – 60 participants

There is a waitlist for each mode. In October we will transfer spots from un-filled divisions to divisions with waiting lists to try and get as many people spots as possible.

We will fill spots as they open up until two weeks before the race. In the past we’ve been able to accommodate a large number of people on the waitlist, so don’t give up hope too quickly!

There are no refunds if you cannot make the race or do not arrive with appropriate gear. Please plan accordingly!

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