| Alcobendas to Oerlinghausen | 981.74 mi (1,579.96 km) |
| Alcobendas to Oestrich-Winkel | 862.75 mi (1,388.47 km) |
| Alcobendas to Offenburg | 789.18 mi (1,270.07 km) |
| Alcobendas to Oftersheim | 852.20 mi (1,371.49 km) |
| Alcobendas to Ohrdruf | 990.06 mi (1,593.34 km) |
| Alcobendas to Ohringen | 876.45 mi (1,410.51 km) |
| Alcobendas to Olbernhau | 1,073.86 mi (1,728.21 km) |
| Alcobendas to Olching | 906.21 mi (1,458.40 km) |
| Alcobendas to Oldenburg | 1,032.72 mi (1,662.01 km) |
| Alcobendas to Oldenburg in Holstein | 1,163.58 mi (1,872.60 km) |
| Alcobendas to Olfen | 933.37 mi (1,502.11 km) |
| Alcobendas to Olpe | 908.81 mi (1,462.58 km) |
| Alcobendas to Olsberg | 944.76 mi (1,520.44 km) |
| Alcobendas to Oranienburg | 1,157.72 mi (1,863.16 km) |
| Alcobendas to Ortenberg | 913.42 mi (1,470.01 km) |
