Set for Saturday & Sunday, July 26–27, 2025, the Hawaii Kai Ultra Run XTreme offers a flexible, self‑paced endurance challenge near Sandy Beach, O‘ahu. Organized by Hawaii Running Project, the event spans a range of distances from Half Marathon to 100 Miles, making it uniquely accommodating to all endurance levels.
Departing from Kalama Valley Park, participants run a rugged 9‑mile loop, featuring coastal out-and-back segments and the infamous “Heartbreak Hill.” Aid stations stocked with water, electrolytes, snacks, and restrooms come every 2.5 miles—alongside a well-marked pet-friendly route with directional arrows and cones.
What sets this event apart is its “choose-your-own-start” flexibility: pick a wave (e.g., Saturday 6 AM, 7 PM, or Sunday 6 AM) or show up anytime between 3 AM Saturday and noon Sunday—no cutoff for the half, marathon, or 30K. This makes it perfect for travelers, solo runners, or anyone seeking a personalized race experience.
Finishers earn certificates, medals, stickers, and have the option to pre-order exclusive shirts. The event is a qualifier for the 50 States Marathon Club and Marathon Maniacs. Participants frequently cite the scenic coastal vistas, casual island energy, and well-supported aid stations as hallmarks.
Why You’ll Love It
- Complete flexibility: Choose your start time and pacing—ideal for solo adventurers.
- Scenic loop: Coastal views, park neighborhoods, and that memorable Heartbreak Hill climb.
- Strong logistical support: Aid stations, restrooms, markers, and no cutoffs on key distances.
- Island destination: Easy access from Waikīkī, qualifying for 50 States/Marathon Maniacs.
- Inclusive atmosphere: Watts for families, solo runners, and ultra fans alike—start when it suits you.
