| Calasparra to Oerlinghausen | 1,072.89 mi (1,726.64 km) |
| Calasparra to Oestrich-Winkel | 943.08 mi (1,517.75 km) |
| Calasparra to Offenburg | 855.52 mi (1,376.83 km) |
| Calasparra to Oftersheim | 923.05 mi (1,485.51 km) |
| Calasparra to Ohrdruf | 1,061.12 mi (1,707.71 km) |
| Calasparra to Ohringen | 939.79 mi (1,512.45 km) |
| Calasparra to Olbernhau | 1,130.57 mi (1,819.47 km) |
| Calasparra to Olching | 948.29 mi (1,526.12 km) |
| Calasparra to Oldenburg | 1,133.60 mi (1,824.35 km) |
| Calasparra to Oldenburg in Holstein | 1,258.20 mi (2,024.87 km) |
| Calasparra to Olfen | 1,030.30 mi (1,658.10 km) |
| Calasparra to Olpe | 998.20 mi (1,606.45 km) |
| Calasparra to Olsberg | 1,032.65 mi (1,661.89 km) |
| Calasparra to Oranienburg | 1,231.81 mi (1,982.40 km) |
| Calasparra to Ortenberg | 990.10 mi (1,593.41 km) |
