| Enniskillen to Oberkirch | 784.69 mi (1,262.84 km) |
| Enniskillen to Obernburg am Main | 774.90 mi (1,247.08 km) |
| Enniskillen to Obernkirchen | 704.78 mi (1,134.23 km) |
| Enniskillen to Oberschleissheim | 926.38 mi (1,490.86 km) |
| Enniskillen to Oberstdorf | 912.53 mi (1,468.57 km) |
| Enniskillen to Obertraubling | 922.71 mi (1,484.96 km) |
| Enniskillen to Obertshausen | 755.24 mi (1,215.44 km) |
| Enniskillen to Oberursel | 740.73 mi (1,192.08 km) |
| Enniskillen to Ochsenfurt | 817.22 mi (1,315.20 km) |
| Enniskillen to Ochsenhausen | 872.54 mi (1,404.22 km) |
| Enniskillen to Ochtrup | 628.97 mi (1,012.22 km) |
| Enniskillen to Odenthal | 657.45 mi (1,058.07 km) |
| Enniskillen to Oelde | 676.16 mi (1,088.17 km) |
| Enniskillen to Oelsnitz | 874.86 mi (1,407.95 km) |
| Enniskillen to Oer-Erkenschwick | 645.36 mi (1,038.60 km) |
