| San Fernando de Henares to Oerlinghausen | 985.31 mi (1,585.70 km) |
| San Fernando de Henares to Oestrich-Winkel | 865.66 mi (1,393.14 km) |
| San Fernando de Henares to Offenburg | 791.28 mi (1,273.45 km) |
| San Fernando de Henares to Oftersheim | 854.60 mi (1,375.35 km) |
| San Fernando de Henares to Ohrdruf | 992.59 mi (1,597.41 km) |
| San Fernando de Henares to Ohringen | 878.49 mi (1,413.79 km) |
| San Fernando de Henares to Olbernhau | 1,075.72 mi (1,731.20 km) |
| San Fernando de Henares to Olching | 907.20 mi (1,460.00 km) |
| San Fernando de Henares to Oldenburg | 1,036.83 mi (1,668.62 km) |
| San Fernando de Henares to Oldenburg in Holstein | 1,167.43 mi (1,878.79 km) |
| San Fernando de Henares to Olfen | 937.20 mi (1,508.28 km) |
| San Fernando de Henares to Olpe | 912.23 mi (1,468.09 km) |
| San Fernando de Henares to Olsberg | 948.13 mi (1,525.86 km) |
| San Fernando de Henares to Oranienburg | 1,160.51 mi (1,867.65 km) |
| San Fernando de Henares to Ortenberg | 916.18 mi (1,474.45 km) |
