www.okinawa100k.jp

Okinawa 100K Ultra Marathon

Name: Okinawa 100K Ultra Marathon
Start: 2025-12-21
End: 2025-12-21
Location: Yonabaru

location_city Yonabaru

flag Japan

calendar_today 21 Dec, 2025

directions_run Running

language Official Website

About the Event

Embrace the unique "My-Cup" philosophy at the Okinawa 100K Ultra Marathon on December 21, 2025, an event designed for every runner to define their own personal victory. Whether you're tackling the grueling 100km solo challenge, the 50km distance, or the scenic 22.5km Nirai-kanai run, the event celebrates individual achievement over pure competition. The inclusive pair entry options for the 100km and 50km distances allow you to share the epic journey with a partner while still being recorded individually. With a festive atmosphere and strong community support across Yonabaru, Nanjo, Yaese, and Itoman cities, it’s a true celebration of endurance. Lace up for a profoundly personal ultra-running experience on the beautiful island of Okinawa.

Races Offered

100 km

Dec 21, 2025

straighten

Distance — 100K

terrain

Type — Road running

timer

Event has passed

100 km Pair

Dec 21, 2025

straighten

Distance — 100K

terrain

Type — Road running

timer

Event has passed

50 km

Dec 21, 2025

straighten

Distance — 50K

terrain

Type — Road running

timer

Event has passed

50 km Pair

Dec 21, 2025

straighten

Distance — 50K

terrain

Type — Road running

timer

Event has passed

Nirai-kanai Run&Walk 22.5km

Dec 21, 2025

straighten

Distance — 22.5K

terrain

Type — Road running

timer

Event has passed

Weather Overview

These values represent the 3-year monthly averages for December in Yonabaru.

Temp (°C)

Feels Like (°C)

thermostat 17.3° / 20.8°

wb_sunny 13.9° / 18.7°

Wind (km/h)

Humidity (%)

air 19.6 /

water_drop 70.4%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 17.3° / 20.8°

wb_sunny 13.9° / 18.7°

air 19.6 km/h

water_drop 70.4%

About Yonabaru

Yonabaru is a town in Shimajiri District, Okinawa Prefecture, Japan. It is located at the southern end of Okinawa Island, on the east coast, overlooking Nakagusuku Bay.

Hotels & Places to Stay

Recommended for You

Hand-picked events we think you’ll love.

Our pick

Nov 21, 2026

Run Manatee - Rye Preserve 5K -2026

The RUN Manatee 5k series offers THREE adventures to celebrate ONE community. Participants will discover Manatee County…

Our pick

Nov 28, 2026

Turkey Trails - Sioux Falls

Join us for the annual Turkey Trails 5k/10k! A fun, Thanksgiving-themed event that is perfect for the whole family.The…

Our pick

Dec 13, 2026

Candy Cane Course- Lincoln

Join us for the annual Candy Cane Course 5k/12k! A fun, Christmas-themed event that is perfect for the whole family.Th…

Our pick

Mar 21, 2027

Space Coast Triathlon and Duathlon

WE ARE NOW OFFERING AN AQUABIKE DIVISION! Triathlon Information:Join us for the annual Space Coast Triathlon, held in …

Okinawa 100K Ultra Marathon

About the Event

Races Offered

100 km

100 km Pair

50 km

50 km Pair

Nirai-kanai Run&Walk 22.5km

Weather Overview

About Yonabaru

Hotels & Places to Stay

Nearby Races

Recommended for You

Run Manatee - Rye Preserve 5K -2026

Turkey Trails - Sioux Falls

Candy Cane Course- Lincoln

Space Coast Triathlon and Duathlon

Get race deals & updates