| Amposta to Oerlinghausen | 866.85 mi (1,395.07 km) |
| Amposta to Oestrich-Winkel | 735.16 mi (1,183.12 km) |
| Amposta to Offenburg | 645.91 mi (1,039.49 km) |
| Amposta to Oftersheim | 713.74 mi (1,148.65 km) |
| Amposta to Ohrdruf | 851.56 mi (1,370.45 km) |
| Amposta to Ohringen | 729.83 mi (1,174.55 km) |
| Amposta to Olbernhau | 920.49 mi (1,481.38 km) |
| Amposta to Olching | 739.03 mi (1,189.35 km) |
| Amposta to Oldenburg | 930.24 mi (1,497.07 km) |
| Amposta to Oldenburg in Holstein | 1,052.38 mi (1,693.65 km) |
| Amposta to Olfen | 826.20 mi (1,329.64 km) |
| Amposta to Olpe | 792.06 mi (1,274.70 km) |
| Amposta to Olsberg | 825.97 mi (1,329.27 km) |
| Amposta to Oranienburg | 1,022.30 mi (1,645.24 km) |
| Amposta to Ortenberg | 781.38 mi (1,257.51 km) |
