ULTRA
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Hawaii Kai Ultra Run XTreme

Jul 25-26, 2026 (Sat-Sun)

About

Set against the vibrant backdrop of Hawaii Kai, this event offers ultramarathon options including 50K, 50 miles, 100K, and 100 miles. The scenic course features a 9-mile loop that guides runners through local neighborhoods, parks, and along picturesque streets, including the descent of Heartbreak Hill and visits to support stations positioned about every 2.5 miles. Each loop starts and finishes at Kalama Valley Park, creating a convenient base for endurance challenges of varying lengths. Participants benefit from well-stocked, environmentally conscious aid stations—this is a cupless event, so reusable hydration gear is required. Expect a welcoming, supportive atmosphere with an emphasis on sustainability and community spirit. The course provides a mix of road and gentle elevation, making it accessible while still offering a rewarding challenge for seasoned ultrarunners. All finishers are recognized for their efforts, and runners tackling the 50-mile, 100K, or 100-mile distances can use their performance to qualify for additional prestigious ultrarunning events.

Races

50K

Jul 25, 2026 (Sat) - 03:00

Distance

50 km

Terrain

Road

80K

Jul 25, 2026 (Sat) - 03:00

Distance

80.5 km

Terrain

Road

100K

Jul 25, 2026 (Sat) - 03:00

Distance

100 km

Terrain

Road

161K

Jul 25, 2026 (Sat) - 03:00

Distance

160.9 km

Terrain

Road

All your race results in one place

Track your race performances from your personal race dashboard.

Weather history

Temperature

74°F / 85°F

Feels like

77°F / 87°F

Avg sunshine hours

12h 41m

Avg rainfall

-

Avg snowfall

-

Max wind speed

15.9 mph (Moderate breeze)

Sweat loss rate

High

Trail conditions

Firm, dry, with good traction

Where to stay

Hawaii Kai Ultra Run XTreme

Jul 25-26, 2026 (Sat-Sun)