| Olton to Oberkirch | 510.98 mi (822.35 km) |
| Olton to Obernburg am Main | 506.76 mi (815.55 km) |
| Olton to Obernkirchen | 460.72 mi (741.46 km) |
| Olton to Oberschleissheim | 655.46 mi (1,054.87 km) |
| Olton to Oberstdorf | 638.81 mi (1,028.06 km) |
| Olton to Obertraubling | 655.50 mi (1,054.93 km) |
| Olton to Obertshausen | 487.83 mi (785.09 km) |
| Olton to Oberursel | 473.66 mi (762.29 km) |
| Olton to Ochsenfurt | 549.75 mi (884.74 km) |
| Olton to Ochsenhausen | 599.45 mi (964.72 km) |
| Olton to Ochtrup | 380.01 mi (611.57 km) |
| Olton to Odenthal | 393.64 mi (633.50 km) |
| Olton to Oelde | 423.94 mi (682.26 km) |
| Olton to Oelsnitz | 616.86 mi (992.74 km) |
| Olton to Oer-Erkenschwick | 388.55 mi (625.30 km) |
