Alaska · 100 Mile
Susitna 100
Susitna 100 is a 100 Mile event held in Big Lake, Alaska. Its next confirmed date is Saturday, February 13, 2027. About 150 runners take part across all distances.
- Race day
- February 13, 2027
- Location
- Big Lake, AK
- Field size
- ~150 runners
Race details
- Date
- Saturday, February 13, 2027
- Location
- Big Lake, Alaska
- Distances
- 100 Mile
- Field size
- About 150 runners
- Course
- Frozen rivers/swamps, ~1,000 ft gain
- Registration
- ultrasignup.com
- Official website
- susitna100.com
Registration, course & weather
- Registration status
- Open
- Start time
- 9:00 AM AKST
- Course profile
- Loop course; Trail surface
About the Susitna 100
A grueling human-powered 100-mile winter ultra across frozen rivers, swamps and wooded trails in remote Southcentral Alaska.
Rankings and notes
- Notes
- A grueling human-powered 100-mile winter ultra across frozen rivers, swamps and wooded trails in remote Southcentral Alaska.
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Susitna 100: common questions
- When is the Susitna 100?
- The next confirmed date is Saturday, February 13, 2027.
- Where is the Susitna 100 held?
- In Big Lake, Alaska.
- What distances does the Susitna 100 offer?
- 100 Mile.
- How many people run the Susitna 100?
- About 150 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Susitna 100?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Susitna 100?
- Yes — registration is open. $270 (from susitna100.com, checked October 5, 2026).
- What time does the Susitna 100 start?
- 9:00 AM AKST.
- What is the course like at the Susitna 100?
- Loop course; Trail surface.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.