| Kirkop to Oerlinghausen | 1,150.22 mi (1,851.10 km) |
| Kirkop to Oestrich-Winkel | 1,030.81 mi (1,658.93 km) |
| Kirkop to Offenburg | 933.74 mi (1,502.71 km) |
| Kirkop to Oftersheim | 980.95 mi (1,578.68 km) |
| Kirkop to Ohrdruf | 1,052.12 mi (1,693.22 km) |
| Kirkop to Ohringen | 956.68 mi (1,539.63 km) |
| Kirkop to Olbernhau | 1,025.90 mi (1,651.03 km) |
| Kirkop to Olching | 869.01 mi (1,398.53 km) |
| Kirkop to Oldenburg | 1,233.59 mi (1,985.27 km) |
| Kirkop to Oldenburg in Holstein | 1,286.96 mi (2,071.17 km) |
| Kirkop to Olfen | 1,151.29 mi (1,852.82 km) |
| Kirkop to Olpe | 1,099.20 mi (1,768.98 km) |
| Kirkop to Olsberg | 1,111.85 mi (1,789.36 km) |
| Kirkop to Oranienburg | 1,170.12 mi (1,883.13 km) |
| Kirkop to Ortenberg | 1,038.84 mi (1,671.85 km) |
