9th Okinawa 100K Ultra Marathon

Yonabaru, Japan

Sunday, December 20, 2026

Choose your distance

100K· €117

Distance

100km

Start Time

05:00

Cutoff

14 hours

Terrain

Road

Difficulty

Intermediate

Max Runners

1,600

Overview

The Okinawa 100K Ultra Marathon starts in Yonabaru Town in the southern part of Okinawa's main island and follows the coast on an out-and-back route that turns at Itoman City Hall. Runners pass Hyakuna Beach and look out over Oujima island, and the Nirai and Kanai bridges near the end of the course are the biggest landmarks. The whole course uses pavements and road shoulders, with 14 hours allowed for the 100 km, nine hours for the 50 km and seven hours for the 22.5 km Nirai Kanai Run & Walk. Entry closes as soon as a distance fills, and a paid shuttle bus links three Naha monorail stations with the start venue.

Coastal out-and-back route from Yonabaru to Itoman City Hall
Hyakuna Beach
Views of Oujima island
Nirai Bridge and Kanai Bridge near the finish

The practical side

Qualification

Open to men and women aged 18 or over; high school students are not permitted. Runners must have the ability to complete the distance they enter, and certificate presentation is required. Wheelchair participation is not allowed.

Start / Finish

Start

100 km: Yonaguhama Park, Yonabaru Town. 50 km: Itoman City Hall. 22.5 km: Gusuku Road Park

Finish

Yonaguhama Park, Yonabaru Town (all distances)

Terrain

Coastal road course run on pavements and road shoulders in the southern part of Okinawa's main island.

Route

Starts at Yonaguhama Park in Yonabaru Town, runs south along the coast through the southern area of the main island to the turnaround at Itoman City Hall, then returns along the same coastal roads to the finish at Yonaguhama Park. Hyakuna Beach and Oujima island are passed along the way, and the Nirai and Kanai bridges come near the end of the course.

Getting There

Shuttle buses run on race day from three Okinawa Urban Monorail stations in Naha (Omoromachi, Kencho-mae and Asahibashi) to the start venue at Yonaguhama Park. The fare is around 3,500 yen and advance reservation is required. Naha city centre is about 10 km from the main venue.

Race Day

Race day registration runs 4:00 to 4:45 for the 100 km, 8:00 to 9:30 for the 50 km and 10:00 to 11:30 for the 22.5 km, at each start venue. The opening ceremony is scheduled for 4:45. Shuttle buses run from Naha monorail stations to Yonaguhama Park, about 10 km away. Results are displayed live for all participants and a web record certificate is issued.

Good to know

What you get

Finisher medal

Finisher certificate

Chip timing

Race photos

My cup

Tote bag

Web record certificate

Live results displayed for all participants

Marathon insurance arranged by the organiser

Food after the finishOkinawa soba and Okinawa folk music at the finish area

On the day

ParkingParking is available at the coin parking lot of Yonabaru Marina at the main venue, Yonaguhama Park (5 minutes' walk from Yonaguhama Park). There is no parking at each start point. The main venue Yonaguhama Park is about 35 minutes by car from Naha Airport, about 30 minutes by car from Naha city centre, and about 8 minutes by car from the Haebaru-Kita interchange. Address: 77 Higashihama, Yonabaru Town, Shimajiri District, Okinawa Prefecture. Itoman City Hall address: 1-1-1 Shiozaki-cho, Itoman City, Okinawa Prefecture. Gusuku Road Park address: 1212 Ishigushinakayama, Nanjo City, Okinawa Prefecture.

ShuttlePaid shuttle bus service from Omoromachi, Kencho-mae and Asahibashi monorail stations to Yonaguhama Park on race day, around 3,500 yen, by advance booking only. Separate booking pages exist for the 100 km service (Kencho-mae and Asahibashi departures) and for the 50 km service.

Public transportShuttle buses run on race day from three Okinawa Urban Monorail stations in Naha (Omoromachi, Kencho-mae and Asahibashi) to the start venue at Yonaguhama Park. The fare is around 3,500 yen and advance reservation is required. Naha city centre is about 10 km from the main venue.

AccessibilityNo. Wheelchair participation is not permitted at this event.

Bag dropYes, baggage storage is available at the start, although valuables cannot be stored. Bags are transported to the finish.

Aid stationsWater is available at all aid stations. · Aid station information shown is from the 2025 event and is for reference; it may change on race day.

Before you enter

RefundsNo refunds of entry fees are permitted for reasons not attributable to the organiser. If applications exceed capacity, an entry may be invalidated depending on the payment date even if payment was completed within the deadline; in that case the fee is refunded by the method determined by the organiser.

TransfersOfficial entry transfer through RUNNET's Yuzureru service is available from 1 July to 2 November 2026. It opens after the entry deadline or once a distance sells out.

Time limitRunners have 14 hours for the 100 km, nine hours for the 50 km and seven hours for the 22.5 km.

Collecting your numberRegistration is open on the day before the race from 10:00 to 17:00 at the Ryukyu Shimpo head office entrance on the first floor, 1-10-3 Izumizaki, Naha (postcode 900-0021). On race day, registration runs from 04:00 to 04:45 for the 100 km, 08:00 to 09:30 for the 50 km and 10:00 to 11:30 for the 22.5 km, at each start venue. The event uses the RUN PASSPORT smart check-in system, so no number card exchange voucher is posted out.

€117

per person · entry fee

Yonabaru, Japan

Sunday, December 20, 2026

Closing soon!

Qualification required: Open to men and women aged 18 or over; high school students are not permitted. Runners must have the ability to complete the distance they enter, and certificate presentation is required. Wheelchair participation is not allowed.

Okinawa 100K Ultra Marathon Executive Committee

View organiser page →

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€117

entry fee

9th Okinawa 100K Ultra Marathon

Overview

The practical side

Good to know

When is the 9th Okinawa 100K Ultra Marathon held?

Which distances can I enter?

What do I receive for taking part?

Is there a student discount?

What happens if the race fills up?

€117

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