| Santiponce to Oerlinghausen | 1,231.86 mi (1,982.48 km) |
| Santiponce to Oestrich-Winkel | 1,112.15 mi (1,789.84 km) |
| Santiponce to Offenburg | 1,036.25 mi (1,667.69 km) |
| Santiponce to Oftersheim | 1,100.31 mi (1,770.77 km) |
| Santiponce to Ohrdruf | 1,238.52 mi (1,993.20 km) |
| Santiponce to Ohringen | 1,123.21 mi (1,807.64 km) |
| Santiponce to Olbernhau | 1,319.71 mi (2,123.87 km) |
| Santiponce to Olching | 1,147.34 mi (1,846.46 km) |
| Santiponce to Oldenburg | 1,282.48 mi (2,063.96 km) |
| Santiponce to Oldenburg in Holstein | 1,413.62 mi (2,275.00 km) |
| Santiponce to Olfen | 1,183.42 mi (1,904.53 km) |
| Santiponce to Olpe | 1,158.86 mi (1,865.01 km) |
| Santiponce to Olsberg | 1,194.78 mi (1,922.82 km) |
| Santiponce to Oranienburg | 1,406.84 mi (2,264.09 km) |
| Santiponce to Ortenberg | 1,162.51 mi (1,870.87 km) |
