Under the Moon

Under the Moon : Hilo to Waimea, Hawaii

Under the Moon is a road ultramarathon set on paved roads between Hilo and Waimea on the island of Hawaii. The event offers multiple individual and relay distances and follows a route alongside Saddle Road.

The longer course is entirely on pavement and includes substantial elevation change: the 100K features about 7,500 feet of climbing and 5,000 feet of descent, with most climbing in the first half. The 50K is listed with about 700 feet of climbing and 5,000 feet of descent. The 25K carries almost 3,000 feet of descent. The 100K has an overall 19-hour time limit and requires reaching the top of Saddle Road at Mauna Kea Recreation Area within 11 hours; there is a 12pm cutoff for the 50K and 25K.

This is a self-supported event. Runners must provide their own water and food drops or have crew meet them on course; relay teams must pull completely off the road to swap runners or face disqualification. Runners are responsible for removing their supplies and trash from the course and for returning from finish locations such as Waimea or the Mauna Kea access intersection.

Required gear includes reflective apparel front and back and lights for all runners. Conditions can range from low 40s with wind and rain to mid 80s; participants must prepare for variable weather.

Distances: Visit the organization's website for the most recent information.

• 100K
• 100 K Relay
• 50K
• 50 K Relay
• 25K Relay
• 25 K

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