| Calpe to Oerlinghausen | 1,009.65 mi (1,624.87 km) |
| Calpe to Oestrich-Winkel | 876.41 mi (1,410.45 km) |
| Calpe to Offenburg | 784.23 mi (1,262.10 km) |
| Calpe to Oftersheim | 852.73 mi (1,372.34 km) |
| Calpe to Ohrdruf | 989.59 mi (1,592.59 km) |
| Calpe to Ohringen | 866.42 mi (1,394.36 km) |
| Calpe to Olbernhau | 1,053.29 mi (1,695.10 km) |
| Calpe to Olching | 867.54 mi (1,396.16 km) |
| Calpe to Oldenburg | 1,074.38 mi (1,729.05 km) |
| Calpe to Oldenburg in Holstein | 1,195.15 mi (1,923.42 km) |
| Calpe to Olfen | 970.12 mi (1,561.26 km) |
| Calpe to Olpe | 934.88 mi (1,504.54 km) |
| Calpe to Olsberg | 968.32 mi (1,558.36 km) |
| Calpe to Oranienburg | 1,160.26 mi (1,867.26 km) |
| Calpe to Ortenberg | 921.42 mi (1,482.89 km) |
