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Course & Elevation

The NAHA Marathon is a mass-participation road marathon held in early December in Naha, the capital of Okinawa, Japan. The 2026 race is the 40th edition. It is run by the NAHA Marathon Association, made up of Naha City, the southern municipalities' association, the Okinawa Times, RBC Ryukyu Broadcasting, the Naha Tourism Association, the Naha City Board of Education and the Okinawa Athletic Association. The 42.195 km Peace Memorial Park course is certified by the Japan Association of Athletics Federations and centres on Peace Memorial Park, passing through five southern municipalities: Naha, Haebaru, Yaese, Itoman and Tomigusuku. The race starts at 9:00 am at Ohnoyama Park, rain or shine, and finishes at Ohnoyama Athletics Stadium in the same park. The time limit is 6 hours 15 minutes, with a checkpoint at 34.3 km at the Naha Nursing College by 2:10 pm and the finish closing at 3:15 pm. The organisers note that the green, relaxed south of Okinawa Island also carries scars of the Battle of Okinawa. The capacity is 30,000 runners, entry is first-come, first-served, and finishers inside the limit receive a medal and certificate. The race began in 1985, and the organisers state its aim as praying for peace while promoting amateur marathon running.

Surface: road Profile: Flat

Weather

Typical climate for the race month — an estimate, not a forecast or a race-day record

Temperature 19°C
Humidity 67%
Rain Chance 35%

December in Naha is mild: average highs are around 21°C and lows around 17°C, with relative humidity near 67% and rain on about 11 days of the month.

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Race Lore

A Sister-City Anniversary in 1985

1985

The NAHA Marathon began in 1985 to mark the 25th anniversary of the sister-city agreement between Naha and Honolulu in Hawaii. By its 40th edition in 2026 it was described by the press as one of the largest mass-participation marathons in Japan.

Runners Who Never Missed One

2026

For the 40th edition the organisers reserved priority entry for 14 runners who had finished all 39 previous NAHA Marathons.

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