Alaska · 50K/100K/135 mi ultra

Denali 135 Ultra

Denali 135 Ultra is a 50K/100K/135 mi ultra event held in Paxson, Alaska. Its next confirmed date is Saturday, June 19, 2027. About 100 runners take part across all distances.

Race day
June 19, 2027
Location
Paxson, AK
Field size
~100 runners

Race details

Date
Saturday, June 19, 2027
Location
Paxson, Alaska
Distances
50K/100K/135 mi ultra
Field size
About 100 runners
Course
High variance
Registration
ultrasignup.com
Official website
spirit-trips.com

Registration, course & weather

Start time
5:00 AM AKDT
Course profile
Point-to-point course; Mostly road, some trail; Not USATF certified
Typical race-day weather
about 46°F at the start, 100% humidity, 1 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked October 5, 2026)

About the Denali 135 Ultra

A point-to-point wilderness ultramarathon running the length of the remote 135-mile Denali Highway from Paxson to Cantwell, with 100K and 50K options. A bucket-list endurance test through Alaska's interior backcountry.

Rankings and notes

Rankings and awards
Point-to-point wilderness ultra across the remote 135-mile Denali Highway; one of Alaska's most extreme footraces
Notes
Elite-level endurance ultra

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Denali 135 Ultra: common questions

When is the Denali 135 Ultra?
The next confirmed date is Saturday, June 19, 2027.
Where is the Denali 135 Ultra held?
In Paxson, Alaska.
What distances does the Denali 135 Ultra offer?
50K/100K/135 mi ultra.
How many people run the Denali 135 Ultra?
About 100 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 Denali 135 Ultra?
Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
Is registration open for the Denali 135 Ultra?
Registration status as last checked October 5, 2026: not announced.
What time does the Denali 135 Ultra start?
5:00 AM AKDT.
What is the course like at the Denali 135 Ultra?
Point-to-point course; Mostly road, some trail; Not USATF certified.
What is race-day weather usually like at the Denali 135 Ultra?
about 46°F at the start, 100% humidity, 1 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked October 5, 2026).