| Dunstable to Oberkirch | 445.01 mi (716.18 km) |
| Dunstable to Obernburg am Main | 444.06 mi (714.64 km) |
| Dunstable to Obernkirchen | 409.86 mi (659.60 km) |
| Dunstable to Oberschleissheim | 591.07 mi (951.23 km) |
| Dunstable to Oberstdorf | 572.79 mi (921.82 km) |
| Dunstable to Obertraubling | 592.87 mi (954.14 km) |
| Dunstable to Obertshausen | 425.57 mi (684.89 km) |
| Dunstable to Oberursel | 411.64 mi (662.47 km) |
| Dunstable to Ochsenfurt | 487.25 mi (784.16 km) |
| Dunstable to Ochsenhausen | 533.89 mi (859.21 km) |
| Dunstable to Ochtrup | 328.28 mi (528.31 km) |
| Dunstable to Odenthal | 333.87 mi (537.32 km) |
| Dunstable to Oelde | 369.80 mi (595.14 km) |
| Dunstable to Oelsnitz | 558.42 mi (898.69 km) |
| Dunstable to Oer-Erkenschwick | 332.60 mi (535.28 km) |
