| Abertillery to Oberkirch | 542.80 mi (873.56 km) |
| Abertillery to Obernburg am Main | 551.00 mi (886.75 km) |
| Abertillery to Obernkirchen | 521.71 mi (839.61 km) |
| Abertillery to Oberschleissheim | 694.24 mi (1,117.27 km) |
| Abertillery to Oberstdorf | 669.54 mi (1,077.52 km) |
| Abertillery to Obertraubling | 699.48 mi (1,125.70 km) |
| Abertillery to Obertshausen | 533.18 mi (858.08 km) |
| Abertillery to Oberursel | 519.60 mi (836.22 km) |
| Abertillery to Ochsenfurt | 594.34 mi (956.50 km) |
| Abertillery to Ochsenhausen | 633.37 mi (1,019.31 km) |
| Abertillery to Ochtrup | 440.17 mi (708.39 km) |
| Abertillery to Odenthal | 444.11 mi (714.73 km) |
| Abertillery to Oelde | 481.74 mi (775.28 km) |
| Abertillery to Oelsnitz | 668.98 mi (1,076.62 km) |
| Abertillery to Oer-Erkenschwick | 444.34 mi (715.09 km) |
