Frequently Asked Questions

Quick answers to the things people ask most. For the full detail, each answer links to the page that covers it.

Can't find your question? Email us at info@susitna100.com.

Getting Here & Travel

  • Anchorage. Most racers stay in Anchorage through Friday, then drive toward the start. The mandatory pre-race meeting (Susitna 100 racers) is in Anchorage on Thursday evening. Many racers move to Wasilla on Friday to be closer to the start.

  • There's no public transportation to Wasilla or the start area. Most people rent a car; some racers coming from out of state share a ride. See the Racer Guides →.

  • Anchorage for the pre-race meeting, or closer to the start near Wasilla / Big Lake the night before.

Registration

  • Susitna 100 opens September 1; Little Su 50K opens November 1. Register through UltraSignup.

  • Yes! You can change between bike, run, and ski on race day. Just declare what you're actually doing at sign-in.

  • No. Entry fees are non-refundable and non-transferable — not to another person, race, or future year.

Race Weekend

  • The course is marked with roughly 1,000 lath stakes, hand-lettered "SU 100" on both sides, with reflective tape for night travel. A sample is shown at the pre-race meeting. Follow only the SU 100 markers — other groups mark their own trails out here.

  • The race knows your location when you check in at a checkpoint. Roving snowmachine patrols monitor the course and can assist racers who stay on the marked trail.

  • Get to the nearest checkpoint or flag down a trail patrol. Race officials can evacuate you; a fee applies.

  • No. The start and finish are at a working Iditarod kennel, and any racer with a dog on the course is disqualified. Please leave pets at home.

Spectators
& Following Along

  • During the race, we update the website with racer progress from the remote checkpoints when weather and connectivity allow — it isn't always possible. For real-time tracking, many racers carry a personal GPS device (like a SPOT tracker); buying one before race day lets both racer and supporters learn how it works.

  • With the exception of the Willow Community Center, checkpoints are private, very small, and staffed by volunteers focused on racers. They are not set up for visitors.

  • The trails stay open to the public during the race, so there'll be general snowmachine and dog sled traffic. But every snowmachine over the trail loosens the snow, so extra spectator traffic creates conditions racers would rather avoid. Following online is the better way to keep up.

About the Organization

  • No. The Susitna 100 and Little Su 50K are run by a small working board of volunteers, and no board member takes any financial profit. All race expenses are covered by entry fees. The organization keeps no sponsors and maintains only a modest balance to fund the next year's advance costs.

  • It offsets Susitna 100 entry fees for Alaska-based, active-duty military racers, funded entirely by donations. 100% of every donation goes to the fund.

bike, Run, Ski gear guide

Division specific gear and technique questions live in the , organized by discipline

Read our gear guide