The Runner's HI 20K, part of the esteemed Marathon Series for 2025, offers runners an exhilarating experience on O'ahu’s West side. This flat and fast multi-loop course is ideal for honing your mid-race pacing skills ahead of the Honolulu Marathon. New enhancements this year include fully custom tech shirts designed exclusively for the first 500 entrants, along with a distinctive medal crafted specifically for the event's participants. Competitors will have ample opportunities to shine as awards are given to both overall winners and age group champions. The top three male and female finishers in each category of the 20K race receive recognition, while those in the 5K dash also vie for accolades across various age brackets. Every runner who crosses the finish line will be celebrated with a custom medal, marking their achievement on this scenic route. Race day starts bright and early at Kalaeloa Professional Center. The main event kicks off at 6:00 AM sharp, followed by the 5K race starting just half an hour later at 6:30 AM. For those traveling from afar or navigating unfamiliar roads, parking is conveniently available around both start and finish areas of the professional center. Detailed maps will be provided closer to the event date. With its flat terrain, picturesque setting, and a host of incentives for all participants, the Runner's HI 20K promises an unforgettable day for runners of every level. For more information or to register, visit our official website where you can find additional details about this exciting race.
Races Offered
20K
Aug 30, 2026
straighten
Distance —
20K
terrain
Type —
Running
timer
11 days remaining
sell
$75.00
5K
Aug 30, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
11 days remaining
sell
$35.00
Weather History
These values represent the 3-year monthly averages for August in Kapolei.
thermostatTemperature
23.7° / 31.1°
wb_sunnyFeels like
24.8° / 30.3°
light_mode
Avg sunshine hours
12h 22m
water_drop
Avg rainfall
0.5 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
15.8 km/h (Gentle breeze)
opacity
Sweat loss rate
Very high
terrain
Course conditions
Hard and dry surface
sunny
Max UV Index
Very High (8.4)
humidity_mid
Humidity
64.1%
wb_twilight
Sunrise
06:10
nightlight
Sunset
19:00
About Kapolei
Learn more about the host city, Kapolei.
Kapolei is a fast-growing town on the Leeward Coast of the island of Oahu.