| Bolton to Oberkirch | 573.43 mi (922.84 km) |
| Bolton to Obernburg am Main | 557.75 mi (897.61 km) |
| Bolton to Obernkirchen | 488.88 mi (786.78 km) |
| Bolton to Oberschleissheim | 710.38 mi (1,143.24 km) |
| Bolton to Oberstdorf | 700.90 mi (1,127.99 km) |
| Bolton to Obertraubling | 705.05 mi (1,134.67 km) |
| Bolton to Obertshausen | 537.88 mi (865.63 km) |
| Bolton to Oberursel | 523.29 mi (842.15 km) |
| Bolton to Ochsenfurt | 599.77 mi (965.24 km) |
| Bolton to Ochsenhausen | 659.25 mi (1,060.97 km) |
| Bolton to Ochtrup | 411.69 mi (662.56 km) |
| Bolton to Odenthal | 439.49 mi (707.29 km) |
| Bolton to Oelde | 458.51 mi (737.90 km) |
| Bolton to Oelsnitz | 656.78 mi (1,056.99 km) |
| Bolton to Oer-Erkenschwick | 427.18 mi (687.48 km) |
