Hawaii Kai Ultra Run - Xtreme

Honolulu, United States • 25-26 Jul 2026

Hawaii Kai Ultra Run - Xtreme 2026

The Hawaii Kai Ultra Run - Xtreme takes place in Honolulu, Hawaii, starting and finishing at Kalama Valley Park. This event offers a wide range of distances for participants to choose from:

  • Half Marathon
  • 30K
  • Marathon
  • 50K
  • 50 Miles
  • 100K
  • 100 Miles

The course consists of a 9-mile loop on paved roads. From Kalama Valley Park, participants run toward Sandy Beach on Kealahou Street, heading to a turnaround point at Kalanianaole Highway. The route continues along Hawaii Kai Drive, passing through Kamilo'iki Community Park, Lunalilo Home Road, and Wailua Street. The final section includes a segment on Hahaione Street and Pepeeko Street before returning to Kalama Valley Park.

This is a cupless event intended to reduce environmental impact. Three aid stations are positioned approximately 2.5 miles apart along the loop, providing water, ice, electrolytes, and snacks. Participants must bring their own hydration packs or reusable containers. Public restrooms are accessible at every aid station 24 hours a day.

Registered finishers receive certificates, medals, and stickers. The event serves as a 50 States Marathon Club qualifier. Additionally, completion of the 50-mile, 100K, or 100-mile distances can be used as a qualifier for HURT events, provided the participant selects an official wave start for certified timing.

Transportation to the venue is available via public transit, with a bus stop located directly across from the check-in tent at Kalama Valley Park. Visit the organization's website for the most recent information.

Race information

100 mi
100 Miles
100 km
100k
50 mi
50 Miles
50 km
50k
26 mi
Marathon
30 km
30k
13 mi
Half Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

A secret-course trail race on June 13, 2026 in the Tantalus trails, listed as 10+ miles of steep, technical singletrack. The event is cupless, has a limited midcourse aid station, and requires entrants to be 15 or older.

A beach run at Kailua Beach Park covering 4.4 miles out and back along the shoreline, with optional barefoot running, age-group awards, and a post-race potluck where participants can share food and relax in the park.

A Spartan Trifecta weekend at Dillingham Ranch on Oahu's North Shore featuring Sprint, Super, Beast, Ultra and kids races across coastal trails, ridgelines and fields. Teams can lock shared start times and service members may receive up to..

The Muddy Dash - Honolulu, HI will take place in Honolulu on Saturday 10 October 2026.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.