Running
Marathon
42.2 km
Start: 09:15 AM
Lake Biwa Mainichi Marathon
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Road runs in Japan, Otsu
Distances
About
The Lake Biwa Mainichi Marathon, first held in 1946, is recognized as the oldest marathon in Japan. Established in Otsu city, it features a fast and flat course along the scenic Lake Biwa, attracting many elite athletes and record-setting performances.
Catering & aid stations
There will be aid stations providing food and drinks at various points along the course.
Pacers
Pacers will be available for participants aiming for specific finish times. Participants can follow designated flag-bearing pacers during the race.
Results
View official resultsTypical weather in Otsu
Monthly averages based on historical data (2000–present).
Jan7°-1°
↑ 07:05
↓ 17:07
Feb8°0°
↑ 06:45
↓ 17:39
Mar12°2°
↑ 06:08
↓ 18:04
Apr18°8°
↑ 05:25
↓ 18:29
May22°13°
↑ 04:54
↓ 18:54
Jun26°17°
↑ 04:43
↓ 19:13
Jul29°22°
↑ 04:54
↓ 19:12
Aug31°23°
↑ 05:17
↓ 18:47
Sep27°20°
↑ 05:40
↓ 18:05
Oct21°13°
↑ 06:03
↓ 17:23
Nov15°7°
↑ 06:32
↓ 16:52
Dec10°2°
↑ 06:58
↓ 16:47
Route maps
Last updated: Jun 5, 2026, 07:52:41 PM
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