Five punishing loops through Honolulu's tropical rainforest—roots, mud, and 22 stream crossings
The HURT 100 is widely considered one of the most grueling 100-mile races in ultrarunning, sending runners through Honolulu's tropical rainforest on five loops connecting the Mānoa, Makiki, and Nu'uanu valleys. The course runs almost entirely on technical single-track choked with roots, rocks, mud, and 22 stream crossings—there are almost no sections where a consistent stride is possible for more than a few hundred yards at a time. Over 100 miles, runners accumulate 24,500 feet of gain and loss through hot, humid jungle between 300 and 1,900 feet elevation. With a historical finish rate of just 47% from 2001 to 2023, the HURT 100 has been humbling even experienced ultrarunners since its inaugural edition in 2001, when only eight runners finished. Entry is by weighted kukui nut lottery, limited to 135 starters, with a mandatory 8-hour trail work requirement.
Recommended for seasoned ultrarunners
Honolulu, HI, United StatesJanuary 16, 2027
HURT 100 Mile Endurance Run is a loop trail race in Honolulu, HI, United States, held on January 16, 2027. The course covers 100 miles, climbs 24,500 ft, and has a 36h cutoff.
Must complete a 50 Mile race or longer within the qualification window
Must complete any official event of 50 miles or longer with publicly available results within 2 years prior to registration. Must finish within the official cutoff. Virtual events, FKTs, stage races (unless a single stage exceeds 50 miles), and Fat Ass runs are not accepted.
8 hours of official volunteer trail work required. Volunteering at running events does not qualify. Submit completed trail work form to [email protected] by the November deadline. See hurt100.com/trail-work/ for details and opportunities.
This edition has its own course and we haven't mapped it yet. The interactive map, elevation profile and aid stations will appear here once the route is confirmed.
Aid stations for this edition aren't published yet. They'll appear here once the route is confirmed.
Tropical rainforest course; heavy rain can fall in large quantities over short periods, creating deep mud and flooding stream crossings
High relative humidity expected throughout. Exposed ridgeline sections (Mānoa Cliff, Nu'uanu ridge) can be very windy and cold at night
No required gear specified
No recommended gear specified
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