| Calella to Oerlinghausen | 768.76 mi (1,237.20 km) |
| Calella to Oestrich-Winkel | 633.26 mi (1,019.13 km) |
| Calella to Offenburg | 538.35 mi (866.39 km) |
| Calella to Oftersheim | 607.19 mi (977.18 km) |
| Calella to Ohrdruf | 743.18 mi (1,196.03 km) |
| Calella to Ohringen | 619.47 mi (996.94 km) |
| Calella to Olbernhau | 805.70 mi (1,296.65 km) |
| Calella to Olching | 620.65 mi (998.83 km) |
| Calella to Oldenburg | 837.06 mi (1,347.11 km) |
| Calella to Oldenburg in Holstein | 953.75 mi (1,534.91 km) |
| Calella to Olfen | 732.43 mi (1,178.73 km) |
| Calella to Olpe | 694.29 mi (1,117.36 km) |
| Calella to Olsberg | 726.67 mi (1,169.47 km) |
| Calella to Oranienburg | 913.66 mi (1,470.40 km) |
| Calella to Ortenberg | 676.68 mi (1,089.01 km) |
