| Fostoria to Oberkirch | 4,235.62 mi (6,816.57 km) |
| Fostoria to Obernburg am Main | 4,230.26 mi (6,807.94 km) |
| Fostoria to Obernkirchen | 4,144.77 mi (6,670.37 km) |
| Fostoria to Oberschleissheim | 4,381.58 mi (7,051.47 km) |
| Fostoria to Oberstdorf | 4,362.85 mi (7,021.32 km) |
| Fostoria to Obertraubling | 4,377.62 mi (7,045.10 km) |
| Fostoria to Obertshausen | 4,210.48 mi (6,776.11 km) |
| Fostoria to Oberursel | 4,195.90 mi (6,752.65 km) |
| Fostoria to Ochsenfurt | 4,272.39 mi (6,875.75 km) |
| Fostoria to Ochsenhausen | 4,325.33 mi (6,960.95 km) |
| Fostoria to Ochtrup | 4,075.57 mi (6,559.00 km) |
| Fostoria to Odenthal | 4,111.87 mi (6,617.41 km) |
| Fostoria to Oelde | 4,123.73 mi (6,636.50 km) |
| Fostoria to Oelsnitz | 4,323.41 mi (6,957.86 km) |
| Fostoria to Oer-Erkenschwick | 4,096.54 mi (6,592.74 km) |
