| Calafell to Oerlinghausen | 815.73 mi (1,312.79 km) |
| Calafell to Oestrich-Winkel | 682.25 mi (1,097.97 km) |
| Calafell to Offenburg | 590.53 mi (950.36 km) |
| Calafell to Oftersheim | 658.86 mi (1,060.33 km) |
| Calafell to Ohrdruf | 796.06 mi (1,281.13 km) |
| Calafell to Ohringen | 673.41 mi (1,083.75 km) |
| Calafell to Olbernhau | 862.39 mi (1,387.89 km) |
| Calafell to Olching | 679.45 mi (1,093.48 km) |
| Calafell to Oldenburg | 881.33 mi (1,418.36 km) |
| Calafell to Oldenburg in Holstein | 1,001.20 mi (1,611.27 km) |
| Calafell to Olfen | 776.90 mi (1,250.30 km) |
| Calafell to Olpe | 740.99 mi (1,192.50 km) |
| Calafell to Olsberg | 774.28 mi (1,246.09 km) |
| Calafell to Oranienburg | 966.80 mi (1,555.91 km) |
| Calafell to Ortenberg | 727.35 mi (1,170.55 km) |
