| # | Juoksija | Maratonien määrä | Paras tulos | Ensimmäinen tulos | Viimeinen tulos |
|---|---|---|---|---|---|
| 12571 | Olli-Pekka Ruutiainen, 1964 | 6 | 3:30:37, Helsinki, 2007 | 3:38:32, Stockholm, 2004 | 3:30:37, Helsinki, 2007 |
| 12572 | Oscar Lassenius, 1981 | 6 | 4:47:26, Helsinki, 2014 | 5:03:22, Helsinki, 2011 | 5:23:40, Stockholm, 2018 |
| 12573 | Oscar Nilsson, 1986 | 6 | 2:59:40, Espoo, 2024 | 3:11:30, Stockholm, 2015 | 4:18:37, Espoo, 2025 |
| 12574 | Oskari Nihtilä, 1991 | 6 | 2:54:26, Helsinki, 2025 | 5:46:53, Pyhätunturi, 2019 | 2:54:26, Helsinki, 2025 |
| 12575 | Osmo Ohtonen, 1954 | 6 | 4:12:01, Cannes, 2013 | 5:07:04, Istanbul, 2010 | 4:44:04, Lisbon, 2015 |
| 12576 | Ossi Manninen, 1959 | 6 | 3:04:03, Joutseno, 2006 | 4:11:59, Stockholm, 2004 | 3:39:22, Lahti, 2009 |
| 12577 | Ossi Park, 1950 | 6 | 4:21:09, Helsinki, 2004 | 4:21:09, Helsinki, 2004 | 5:25:33, Helsinki, 2010 |
| 12578 | Otto Koivisto, 2001 | 6 | 2:59:35, Helsinki, 2026 | 4:22:32, Espoo, 2018 | 2:59:35, Helsinki, 2026 |
| 12579 | Otto Kuvaja, 1996 | 6 | 4:01:32, Helsinki, 2026 | 4:19:41, Helsinki, 2021 | 4:01:32, Helsinki, 2026 |
| 12580 | Otto Sillanpää, 1988 | 6 | 2:58:33, Copenhagen, 2015 | 4:15:39, Stockholm, 2012 | 4:32:33, Stockholm, 2019 |