| Ustka to Oberkirch | 561.80 mi (904.14 km) |
| Ustka to Obernburg am Main | 462.01 mi (743.53 km) |
| Ustka to Obernkirchen | 356.06 mi (573.03 km) |
| Ustka to Oberschleissheim | 492.94 mi (793.31 km) |
| Ustka to Oberstdorf | 571.54 mi (919.81 km) |
| Ustka to Obertraubling | 436.50 mi (702.47 km) |
| Ustka to Obertshausen | 459.91 mi (740.15 km) |
| Ustka to Oberursel | 461.27 mi (742.34 km) |
| Ustka to Ochsenfurt | 445.70 mi (717.28 km) |
| Ustka to Ochsenhausen | 539.05 mi (867.51 km) |
| Ustka to Ochtrup | 430.11 mi (692.19 km) |
| Ustka to Odenthal | 474.17 mi (763.11 km) |
| Ustka to Oelde | 406.68 mi (654.49 km) |
| Ustka to Oelsnitz | 348.66 mi (561.11 km) |
| Ustka to Oer-Erkenschwick | 446.46 mi (718.50 km) |
