| Mairena del Aljarafe to Oerlinghausen | 1,238.57 mi (1,993.29 km) |
| Mairena del Aljarafe to Oestrich-Winkel | 1,118.71 mi (1,800.39 km) |
| Mairena del Aljarafe to Offenburg | 1,042.59 mi (1,677.89 km) |
| Mairena del Aljarafe to Oftersheim | 1,106.72 mi (1,781.10 km) |
| Mairena del Aljarafe to Ohrdruf | 1,244.96 mi (2,003.57 km) |
| Mairena del Aljarafe to Ohringen | 1,129.52 mi (1,817.79 km) |
| Mairena del Aljarafe to Olbernhau | 1,325.94 mi (2,133.90 km) |
| Mairena del Aljarafe to Olching | 1,153.30 mi (1,856.06 km) |
| Mairena del Aljarafe to Oldenburg | 1,289.32 mi (2,074.97 km) |
| Mairena del Aljarafe to Oldenburg in Holstein | 1,420.40 mi (2,285.92 km) |
| Mairena del Aljarafe to Olfen | 1,190.20 mi (1,915.44 km) |
| Mairena del Aljarafe to Olpe | 1,165.55 mi (1,875.77 km) |
| Mairena del Aljarafe to Olsberg | 1,201.45 mi (1,933.55 km) |
| Mairena del Aljarafe to Oranienburg | 1,413.35 mi (2,274.57 km) |
| Mairena del Aljarafe to Ortenberg | 1,169.02 mi (1,881.35 km) |
