| Maesteg to Oerlinghausen | 526.35 mi (847.08 km) |
| Maesteg to Oestrich-Winkel | 520.11 mi (837.03 km) |
| Maesteg to Offenburg | 557.24 mi (896.79 km) |
| Maesteg to Oftersheim | 558.86 mi (899.40 km) |
| Maesteg to Ohrdruf | 623.75 mi (1,003.84 km) |
| Maesteg to Ohringen | 601.61 mi (968.19 km) |
| Maesteg to Olbernhau | 737.46 mi (1,186.83 km) |
| Maesteg to Olching | 704.93 mi (1,134.48 km) |
| Maesteg to Oldenburg | 510.87 mi (822.16 km) |
| Maesteg to Oldenburg in Holstein | 631.53 mi (1,016.35 km) |
| Maesteg to Olfen | 472.46 mi (760.36 km) |
| Maesteg to Olpe | 497.11 mi (800.02 km) |
| Maesteg to Olsberg | 521.81 mi (839.77 km) |
| Maesteg to Oranienburg | 718.08 mi (1,155.65 km) |
| Maesteg to Ortenberg | 558.67 mi (899.09 km) |
