| Dun Dealgan to Oberkirch | 729.66 mi (1,174.28 km) |
| Dun Dealgan to Obernburg am Main | 720.40 mi (1,159.37 km) |
| Dun Dealgan to Obernkirchen | 653.17 mi (1,051.17 km) |
| Dun Dealgan to Oberschleissheim | 871.60 mi (1,402.70 km) |
| Dun Dealgan to Oberstdorf | 857.50 mi (1,380.01 km) |
| Dun Dealgan to Obertraubling | 868.37 mi (1,397.51 km) |
| Dun Dealgan to Obertshausen | 700.81 mi (1,127.84 km) |
| Dun Dealgan to Oberursel | 686.33 mi (1,104.54 km) |
| Dun Dealgan to Ochsenfurt | 762.81 mi (1,227.63 km) |
| Dun Dealgan to Ochsenhausen | 817.55 mi (1,315.71 km) |
| Dun Dealgan to Ochtrup | 576.53 mi (927.84 km) |
| Dun Dealgan to Odenthal | 603.35 mi (971.00 km) |
| Dun Dealgan to Oelde | 623.45 mi (1,003.34 km) |
| Dun Dealgan to Oelsnitz | 821.69 mi (1,322.39 km) |
| Dun Dealgan to Oer-Erkenschwick | 592.04 mi (952.79 km) |
