The Lake Biwa Mainichi Marathon (びわ湖毎日マラソン Biwako Mainichi Marason) held in Otsu, Shiga, Japan, is one of the prominent Marathon races of the year.
Key: Course record
| Date | Winner | Time |
|---|---|---|
| 1 March 2009 | Paul Tergat (KEN) | 2:10:22 |
| 2 March 2008 | Mubarak Hassan Shami (QAT) | 2:08:23 |
| 4 March 2007 | Samson Ramadhani (TAN) | 2:10:43 |
| 5 March 2006 | José Ríos | 2:09:15 |
| 6 March 2005 | Joseph Muriithi Riri (KEN) | 2:09:00 |
| 7 March 2004 | José Ríos (ESP) | 2:07:42 |
| 2 March 2003 | Japhet Kosgei (KEN) | 2:07:39 |
| 3 March 2002 | Ryūji Takei (JPN) | 2:08:35 |
| 4 March 2001 | Antoni Peña (ESP) | 2:07:34 |
| 5 March 2000 | Martín Fiz | 2:08:14 |
| 7 March 1999 | Martín Fiz | 2:08:50 |
| 1 March 1998 | Muneyuki Ojima (JPN) | 2:08:43 |
| 2 March 1997 | Martín Fiz (ESP) | 2:08:05 |
| 3 March 1996 | Joaquim Pinheiro (POR) | 2:09:32 |
| 19 March 1995 | Yūji Nakamura (JPN) | 2:10:49 |
| 6 March 1994 | Kenichi Suzuki (JPN) | 2:11:05 |
| 14 March 1993 | Mike O'Reilly | 2:11:01 |
| 15 March 1992 | Mike O'Reilly (IRE) | 2:13:15 |
| 10 March 1991 | Simon Mrashani (TAN) | 2:11:34 |
| 11 March 1990 | Eddy Hellebuyck (BEL) | 2:13:03 |
| 12 March 1989 | Tōru Kozasu (JPN) | 2:14:31 |
| 13 March 1988 | Toshihiko Seko (JPN) | 2:12:41 |
| 8 March 1987 | Fumiaki Abe | 2:11:08 |
| 9 March 1986 | Toshihiro Shibutani (JPN) | 2:14:55 |
| 10 March 1985 | Fumiaki Abe (JPN) | 2:11:04 |
| 11 March 1984 | Tetsuji Iwase (JPN) | 2:14:24 |
| 13 March 1983 | Kōshirō Kawaguchi (JPN) | 2:13:22 |
| 14 March 1982 | Michio Mizukubo (JPN) | 2:15:23 |
| 15 March 1981 | Masao Matsuo (JPN) | 2:14:38 |
| 23 March 1980 | Hiroshi Yuge (JPN) | 2:14:33 |
| 15 April 1979 | Shigeru So (JPN) | 2:13:26 |
| 23 April 1978 | Takeshi So (JPN) | 2:15:15 |
| 17 April 1977 | Karel Lismont (BEL) | 2:14:08 |
| 18 April 1976 | Akio Usami | 2:15:22 |
| 20 April 1975 | Akio Usami | 2:12:40 |
| 21 April 1974 | Akio Usami | 2:13:24 |
| 18 March 1973 | Frank Shorter (USA) | 2:12:03 |
| 19 March 1972 | Akio Usami | 2:20:24 |
| 21 March 1971 | Yoshiaki Unetani (JPN) | 2:16:45,4 |
| 12 April 1970 | Bill Adcocks (GBR) | 2:13:46 |
| 11 May 1969 | Kazuo Matsubara (JPN) | 2:22:44 |
| 14 April 1968 | Akio Usami (JPN) | 2:13:49 |
| 14 May 1967 | Yoshirō Mifune | 2:25:53 |
| 5 June 1966 | Yoshirō Mifune (JPN) | 2:26:01,6 |
| 9 May 1965 | Abebe Bikila | 2:22:55,8 |
| 12 April 1964 | Kenji Kimihara | 2:17:11,4 |
| 12 May 1963 | Kenji Kimihara (JPN) | 2:20:24,8 |
| 13 May 1962 | Masayuki Nagata (JPN) | 2:27:37 |
| 25 June 1961 | Abebe Bikila (ETH) | 2:29:27 |
| 15 May 1960 | Nobuyoshi Sadanaga (JPN) | 2:34:57 |
| 10 May 1959 | Kurao Hiroshima | 2:30:06 |
| 11 May 1958 | Takayuki Nakao (JPN) | 2:25:51 |
| 3 May 1957 | Kurao Hiroshima | 2:31:20 |
| 6 May 1956 | Yoshiaki Kawashima (JPN) | 2:27:45 |
| 8 May 1955 | Kurao Hiroshima (JPN) | 2:26:32 |
| 16 May 1954 | Hideo Hamamura (JPN) | 2:27:56 |
| 10 May 1953 | Hiroshi Uwa (JPN) | 2:41:28 |
| 4 May 1952 | Yoshitaka Uchikawa (JPN) | 2:29:54,4 |
| 6 May 1951 | Tadashi Asai (JPN) | 2:32:41 |
| 7 May 1950 | Giichi Noda (JPN) | 2:37:25 |
| 4 May 1949 | Saburō Yamada (JPN) | 2:40:32 |
| 9 May 1948 | Shinzō Koga | 2:40:05 |
| 18 May 1947 | Shinzō Koga | 2:43:17 |
| 10 February 1946 | Shinzō Koga (JPN) | 2:44:57 |
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