| San Sebastian de los Reyes to Oerlinghausen | 980.74 mi (1,578.35 km) |
| San Sebastian de los Reyes to Oestrich-Winkel | 861.76 mi (1,386.88 km) |
| San Sebastian de los Reyes to Offenburg | 788.22 mi (1,268.52 km) |
| San Sebastian de los Reyes to Oftersheim | 851.23 mi (1,369.92 km) |
| San Sebastian de los Reyes to Ohrdruf | 989.08 mi (1,591.77 km) |
| San Sebastian de los Reyes to Ohringen | 875.49 mi (1,408.96 km) |
| San Sebastian de los Reyes to Olbernhau | 1,072.91 mi (1,726.68 km) |
| San Sebastian de los Reyes to Olching | 905.30 mi (1,456.94 km) |
| San Sebastian de los Reyes to Oldenburg | 1,031.71 mi (1,660.38 km) |
| San Sebastian de los Reyes to Oldenburg in Holstein | 1,162.57 mi (1,870.98 km) |
| San Sebastian de los Reyes to Olfen | 932.36 mi (1,500.49 km) |
| San Sebastian de los Reyes to Olpe | 907.81 mi (1,460.97 km) |
| San Sebastian de los Reyes to Olsberg | 943.76 mi (1,518.83 km) |
| San Sebastian de los Reyes to Oranienburg | 1,156.73 mi (1,861.58 km) |
| San Sebastian de los Reyes to Ortenberg | 912.44 mi (1,468.43 km) |
