The HURT Trail 100-Mile Endurance Run (HURT 100) is a very difficult event designed for the adventurous and well-prepared ultrarunner. It is conducted on trails located in the mountains above the city of Honolulu (O‘ahu, Hawai‘i). The race is noted for its grueling terrain and for a uniquely scenic course, offering views of the O‘ahu coastline as well as the Pacific Ocean.
It is conducted on trails within the jurisdiction of the State of Hawai‘i Department of Land and Natural Resources (DLNR), Division of Forestry and Wildlife, Nā Ala Hele program.
Nā Ala Hele has turned traces of pig trails through the rain forest into people-friendly, single-track paths. The event organizers are very grateful for the staff’s untiring year-round commitment to trail maintenance for all users, and help in preparing for this annual event.
The 2017 race will be held on January 14 and 15.
– 100 miles over 5 laps (partial out and backs) in a semi-tropical rain forest
– 99% single-track trails, 1% asphalt
– Moderately packed soil surface generously interspersed with roots, rocks, puddles, and mud wallows
– Narrow trails passing through forest, along exposed ridges, and past vertical embankments
– 20 stream crossings (four per loop)
– Three aid stations per lap
– 24,500 feet of elevation gain
– 36-hour time limit.
Here’s a small sum up of the race details, from the Book of HURT:
(A link to the full version of the book can be found down this page.:
Participants should expect lower daytime highs and nighttime lows, especially on the
exposed sections of Mānoa Cliff and Nu‘uanu ridge. Precipitation is higher in the rain forest than in the urban
areas of Honolulu, and can fall in huge quantities over a brief span of time. Regardless of rain, high relative
humidity should be expected.
Altitude / Elevation Change
Over the 100-mile course, the elevation ranges from 300 to 1900 feet. The total cumulative elevation gain is
roughly 24,500 feet. For the technically inclined, the GPS sampling interval for this calculation was about 100
The HURT 100 course consists almost exclusively of technical, single-track trail on surfaces that include roots,
rocks, and soil in a wide range of conditions, from sun-baked clay to mud of varying depth. Sudden hairpin turns
and steep inclines of up to approximately two miles in length are a common occurrence. Very few sections of the
course can be run with a consistent stride for more than several hundred yards at a time.
There are a total of twenty stream crossings. Mānoa Stream and Nu‘uanu Stream are each crossed twice per lap
at locations close to the Paradise Park and Nu’uanu Aid Stations, respectively.
Participants will be running on technical trails where footing is adequate at best. If it rains (which is common),
there can be an abundance of mud. Attention to the terrain underfoot and directly ahead is critical in this event.
Some trails are located adjacent to cliffs with extreme drop-offs.
— HURT Hawaii (@HURThawaii) 10 januari 2017
As no part of the course (except for the aid stations) is lit, and very little moonlight penetrates the forest canopy,
race participants will need artificial light at night. Runners (and pacers) are reminded that daylight hours are
shorter in the forest than in the open. Participants should carry backup batteries and lights, and keep extras in
One of the most common medical problems for endurance athletes is dehydration. This is especially relevant for
the HURT 100 as conditions on the course can be hot and humid. Each runner is solely responsible for
monitoring his / her hydration level; race officials will not be weighing participants. Runners should leave each
aid station with a minimum of 32 ounces of water, with 64 ounces being highly recommended.
WSER Qualifying race
the 2017 HURT 100 has been selected as a qualifying race for the 2018 Western States 100. Runners who complete the race in 36 hours or less will qualify to enter a lottery where the field for Western States will be selected.
The qualifying period for the 2018 Western States will be from November 7, 2016 through November 5, 2017. The lottery will be held on December 2, 2017 and the race itself will be run on June 23, 2018.
HURT 100 2017
See the link down this page to follow the runners live!
Also published on Medium.