Choose your distance:  Half Marathon, 30K, Marathon, 50K, 50 Miles, 100K, or 100 Miles.
 
Choose your own start time:  NEW in 2025 are Start Time options for the Half Marathon, 30K, and Marathon distances only.
If you enjoy running with your peers, we are offering Corral selections with set wave start times. Selections may be made when registering for the Half Marathon, 30K, and Marathon distances which are as follows:
<ol><li>Saturday, 7/26/2025 - 6am Wave Start</li><li>Saturday, 7/26/2025 - 7pm Wave Start</li><li>Sunday, 7/27/2025 - 6am Wave Start</li></ol>
Or you can simply show up and sign in with your own start time at the start/finish tent for all distances. Start Saturday (3AM or after) or Sunday (most people start between 3AM and 7AM on Saturday morning.) You must start before noon on Saturday and remain on the course to be eligible for no cutoff time. ALL DISTANCES MUST BE STARTED BY NOON ON SUNDAY, 7/27/2025 UNLESS ARRANGEMENTS HAVE BEEN MADE WITH THE RACE DIRECTOR IN ADVANCE. 
 
Location:  The start and finish is at Kalama Valley Park at 555 Kealahou St. in Hawaii Kai. *Bus Information - Bus #23, Bus Stop ID #288 is at Kealahou St. and Mokuhano St. across from the Check-In Tent at Kalama Valley Park.
 
Course:  9-mile loop with aid stations approximately 2.5 miles apart. Follow the arrows and cones running in the opposite direction of traffic.  Begin at Kalama Valley Park (Aid Station #1) running towards Sandy Beach on Kealahou St, turn at the turnaround point at Kealahou St. and Kalanianaole Hwy, continue back on Kealahou St. and make a left on Hawaii Kai Dr for about a mile including down Heartbreak Hill where you will find Aid Station #2 at Kamilo&#39;iki Community Park; make a left on Lunalilo Home Rd. running for about 0.8 miles, then make a right on Wailua St. for about 0.4 miles, then left on Hawaii Kai Dr. for about 0.2 mile; make a right to continue on Hawaii Kai Dr for about 1/2 mile; turn right running on Hahaione St. for about 0.3 miles and make a left on Pepeeko St. to find Aid Station #3 at Hahaione Neighborhood Park. Continue on Pepeeko St. around the park and make a left on Hawaii Kai Dr. to return the same route back to Kalama Valley Park to complete a loop.
 
COURSE MAP:  <a title="Course Map" href="https://goo.gl/maps/9sN2pmZKzBj8udjg9" target="_blank" rel="nofollow noopener noreferrer">https://goo.gl/maps/9sN2pmZKzBj8udjg9</a>
 Distance Maps: <a href="https://hawaiikaiultrarun.wordpress.com/maps/" target="_blank" rel="nofollow noopener noreferrer">Maps | Hawaii Kai Ultra Run (wordpress.com)</a>
 
Aid Stations:  Water, electrolytes, and general snacks will be provided. Public restrooms are available at all three aid stations.
 
Aid Station #1 - Start/Finish - Kalama Valley Park - 555 Kealahou St.
 
Aid Station #2 - Kamilo&#39;iki Community Park - 7750 Hawaii Kai Dr.
 
Aid Station #3 - Hahaione Neighborhood Park - 663 Pepeekeo St. 
 
Certificates, medals, and stickers will be awarded to all registered finishers.  HKUR XTreme 2025 Finisher shirts will be available for purchase for $25 at time of registration by 7/7/2025. A LIMITED SUPPLY OF HKUR SHIRTS MAY BE AVAILABLE FOR PURCHASE ON RACE DAY FOR $30 (not guaranteed).
 
Check out the HKUR Store for other HKUR merchandise available for purchase in advance and on race day: <a href="https://runsignup.com/Race/Store/HI/Honolulu/HawaiiKaiUltraRunXTreme" target="_blank" rel="nofollow noopener noreferrer">https://runsignup.com/Race/Store/HI/Honolulu/HawaiiKaiUltraRunXTreme</a>.
 
This event is a 50 States Marathon Club qualifier and will count towards your totals.
 
Follow us on Instagram &#64;hawaii.kai.ultra.run

Hawaii Kai Ultra Run XTreme 2025

Marathon Results