The Lake Biwa Marathon first fired its starting pistol in 1946 in Osaka and is considered to be the oldest marathon held in Japan. In 1962, the marathon moved to Otsu city which is home to Japan's oldest and largest lake, Lake Biwa. Since this move the race has been renamed the Lake Biwa Mainichi Marathon.
The course is comparatively flat and considered to be "a fast-speed-course".
Many of the world's foremost athletes have taken part in this race and establishing great records.
In 2020, the Lake Biwa Mainichi Marathon will be held on March 8.
The course is comparatively flat and considered to be "a fast-speed-course".
Many of the world's foremost athletes have taken part in this race and establishing great records.
In 2020, the Lake Biwa Mainichi Marathon will be held on March 8.
| Organizers: | Japan Association of Athletics Federations (JAAF) The Mainichi Newspapers Shiga Prefecture Otsu City |
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| Co-organizer: | NHK(Japan Broadcasting Corporation) |
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| Supporting organizations: | Shiga Prefectural Sports Association Otsu City Sports Association Sports Nippon Newspapers |
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| Supervisor: | Shiga Association of Athletics |
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| Major Sponsor: | Sumitomo Electric Industries, Ltd. |
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| Supporting Sponsor: | Citizen Watch Co., Ltd. GS Yuasa Corporation |
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| Contributing Sponsors: | Shiga Prefectural Police Japan Ground Self Defense Force Camp Otsu |
| Lake Biwa Mainichi Marathon Office: | The Mainichi Newspapers Osaka Office |