| Abertillery to Oerlinghausen | 503.22 mi (809.85 km) |
| Abertillery to Oestrich-Winkel | 499.32 mi (803.57 km) |
| Abertillery to Offenburg | 538.97 mi (867.39 km) |
| Abertillery to Oftersheim | 538.82 mi (867.14 km) |
| Abertillery to Ohrdruf | 601.46 mi (967.95 km) |
| Abertillery to Ohringen | 581.47 mi (935.78 km) |
| Abertillery to Olbernhau | 715.02 mi (1,150.72 km) |
| Abertillery to Olching | 685.41 mi (1,103.06 km) |
| Abertillery to Oldenburg | 487.15 mi (784.00 km) |
| Abertillery to Oldenburg in Holstein | 607.77 mi (978.12 km) |
| Abertillery to Olfen | 449.59 mi (723.54 km) |
| Abertillery to Olpe | 474.96 mi (764.38 km) |
| Abertillery to Olsberg | 499.23 mi (803.43 km) |
| Abertillery to Oranienburg | 694.53 mi (1,117.74 km) |
| Abertillery to Ortenberg | 537.13 mi (864.43 km) |
