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Hawaii · Honolulu
Hawaii Kai
Jul 25, 2026
Founded in 2013, Hawaii Kai Ultra Run XTreme loops a 9-mile paved road course on Oahu's east end — start/finish at Kalama Valley Park, out toward Sandy Beach, up and over Heartbreak Hill (Koko Crater, climbing from ~50 to 286 feet), and back through Hawaii Kai's residential streets. The 100-mile distance requires roughly 11 loops and ~6,400 feet of gain on a course open to normal traffic. No mass start and no hard cutoff: runners self-time, log laps on the honor system, and may begin as early as 3 AM Saturday. Finishing the 50-mile, 100K, or 100-mile qualifies for HURT race entry.
The numbers
Race statistics
- Distance
- 100 mi
- Vertical gain
- 6,400 ft
- Course
- Loop
- Unique miles
- 5 mi
- Lottery
- No
- Sub-24 hr
- 0%
- Avg finishers
- 1
64 ft / mi
11 mi loop
of finishers
per year
◈ From the runners