| Troina to Oberkirch | 811.39 mi (1,305.81 km) |
| Troina to Obernburg am Main | 875.77 mi (1,409.41 km) |
| Troina to Obernkirchen | 1,035.13 mi (1,665.87 km) |
| Troina to Oberschleissheim | 739.07 mi (1,189.42 km) |
| Troina to Oberstdorf | 700.19 mi (1,126.85 km) |
| Troina to Obertraubling | 782.13 mi (1,258.71 km) |
| Troina to Obertshausen | 895.22 mi (1,440.72 km) |
| Troina to Oberursel | 908.11 mi (1,461.46 km) |
| Troina to Ochsenfurt | 850.18 mi (1,368.23 km) |
| Troina to Ochsenhausen | 748.47 mi (1,204.55 km) |
| Troina to Ochtrup | 1,058.86 mi (1,704.07 km) |
| Troina to Odenthal | 985.94 mi (1,586.72 km) |
| Troina to Oelde | 1,019.95 mi (1,641.45 km) |
| Troina to Oelsnitz | 881.06 mi (1,417.94 km) |
| Troina to Oer-Erkenschwick | 1,022.02 mi (1,644.79 km) |
