Biwako Marathon

OtsuShigaJapan

Next race

Sunday, 7 March 2027

9:15 am start

Distance

42.195 km / 26.2 mi

Lakeside scenic road

Elevation

Flat · 50 m gain

50 m climbing

Race profile

Overview

The Biwako Marathon is one of Japan's oldest and most prestigious marathons, drawing approximately 5,367 finishers each March around Lake Biwa in Shiga Prefecture. The course follows Japan's largest lake with views of the Hira mountains and the Otsu waterfront. March's cool Kansai spring and flat lakeside paths make it a favourite tune-up before the Tokyo Marathon.

Biwako Marathon is a certified 42.195 km (26.2 mile) marathon — the standard World Athletics marathon distance.

Typical participants: Approximately 5,367 finishers

Weather: Cool and humid spring
5–9°C · humidity 65–80%
Marathon weather guide →

Course & terrain

Biwako Marathon course

Route map and elevation profile for race-week planning.

The Biwako Marathon is a lakeside scenic road that starts and finishes in Otsu near Lake Biwa. The loop follows the Biwako lakeside road past the Otsu port, Ishiyama-dera temple area, and the Hama-Ōtsu waterfront. The flat profile keeps rhythm steady throughout, with only minor bridge ramps or short rises interrupting otherwise even pacing. Spectators gather along the waterfront, at the start-finish festival, and at organised cheer stations on the most scenic coastal stretches.

Biwako Marathon route map

Registration

Biwako Marathon entry requirements

For the Biwako Marathon, otsu is just 10 minutes from Kyoto Station by JR train. Many runners stay in Kyoto and travel to Otsu on race morning.

Common questions

Frequently Asked Questions

What is the Biwako Marathon elevation profile?: The Biwako Marathon has 50 metres of total climbing and 50 metres of descent over 42.195 km (26.2 miles). The course is flat, with 0 metres of net change from start to finish.
Where can I find the Biwako Marathon route map?: This page includes a Biwako Marathon course map showing the full 42.195 km route from start to finish. Follows the Biwako lakeside road past the Otsu port, Ishiyama-dera temple area, and the Hama-Ōtsu waterfront.
How long is the Biwako Marathon?: The Biwako Marathon is the standard marathon distance of 42.195 kilometres (26.2 miles), certified to World Athletics rules. Lakeside scenic road starting and finishing in Otsu near Lake Biwa.
What time does the Biwako Marathon start?: The 2027 Biwako Marathon starts at 9:15 am local time on Sunday, 7 March 2027. Arrive early for baggage drop and corral access — official race communications confirm any last-minute schedule changes.
What is Lake Biwa?: Lake Biwa is Japan's largest freshwater lake, occupying most of Shiga Prefecture east of Kyoto. The marathon follows its shores through Otsu, the prefectural capital.
When is the Biwako Marathon?: The Biwako Marathon is held on the first Sunday of March. and is competitive due to the race's long history.
Is the Biwako Marathon flat?: Yes. The lakeside course is one of Japan's flatter established marathons, popular with runners targeting fast times before Tokyo.
How do I get to the Biwako Marathon from Kyoto?: Otsu is just 10 minutes from Kyoto Station by JR train. Many runners stay in Kyoto and travel to Otsu on race morning.
What weather should I expect at the Biwako Marathon in March?: Early March around Lake Biwa is cool, often 4–10 °C (39–50 °F). Lake breezes can make it feel colder — dress warmly for the start.

Last updated 11 October 2026. Edition dates and course details are reviewed regularly.

Close to this race

Nearby Marathons

Other races closest to Otsu.

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The Kyoto Marathon brings roughly 17,000 runners through Japan's ancient capital each February. The course links UNESCO-listed temples, the Kamo River, and the Kyoto Imperial Palace with views of forested hills on the city's eastern edge. Kyoto's cultural landmarks and spring-adjacent race date make it one of Japan's most scenic urban marathons despite a largely flat profile.

Next race: Sunday, 21 February 2027

NaraNaraJapan· 35 km away

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OsakaOsakaJapan· 48 km away

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Next race: Sunday, 28 February 2027

KobeHyogoJapan· 71 km away

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Next race: Sunday, 15 November 2026

FukuchiyamaKyotoJapan· 76 km away

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The Fukuchiyama Marathon draws approximately 4,000 finishers each November on a river city road in Fukuchiyama, Japan. The marathon has one of the deeper traditions among Japan's regional citizen races. The route passes castle-town streets, the Yura River corridor, and broad roads through northern Kyoto Prefecture. Gentle undulations are the only breaks on an otherwise flat profile.

Next race: Sunday, 22 November 2026

MatsusakaMieJapan· 77 km away

Mie Matsusaka Marathon

The Mie Matsusaka Marathon draws approximately 2,000 finishers each December on an urban and rural road in Matsusaka, Japan. Local food culture is a major part of the race identity and post-race atmosphere. The route passes castle-town streets, open countryside, and roads linked to the city famous for Matsusaka beef. Gentle undulations are the only breaks on an otherwise flat profile.

Next race: Sunday, 6 December 2026

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Planning guides

Related guides

Practical guides to help you plan, train for, and run this race.

Biwako Marathon

Overview

Biwako Marathon course

Biwako Marathon route map

Biwako Marathon entry requirements

Biwako Marathon travel

Frequently Asked Questions

Biwako Marathon links

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