| Colwyn Bay to Oberkirch | 608.38 mi (979.10 km) |
| Colwyn Bay to Obernburg am Main | 599.76 mi (965.21 km) |
| Colwyn Bay to Obernkirchen | 539.62 mi (868.43 km) |
| Colwyn Bay to Oberschleissheim | 750.43 mi (1,207.69 km) |
| Colwyn Bay to Oberstdorf | 736.22 mi (1,184.82 km) |
| Colwyn Bay to Obertraubling | 748.02 mi (1,203.83 km) |
| Colwyn Bay to Obertshausen | 580.33 mi (933.95 km) |
| Colwyn Bay to Oberursel | 565.92 mi (910.76 km) |
| Colwyn Bay to Ochsenfurt | 642.35 mi (1,033.77 km) |
| Colwyn Bay to Ochsenhausen | 696.16 mi (1,120.35 km) |
| Colwyn Bay to Ochtrup | 461.13 mi (742.11 km) |
| Colwyn Bay to Odenthal | 483.68 mi (778.40 km) |
| Colwyn Bay to Oelde | 507.17 mi (816.22 km) |
| Colwyn Bay to Oelsnitz | 703.96 mi (1,132.92 km) |
| Colwyn Bay to Oer-Erkenschwick | 474.29 mi (763.30 km) |
