| Tolmezzo to Oberkirch | 273.46 mi (440.09 km) |
| Tolmezzo to Obernburg am Main | 297.31 mi (478.47 km) |
| Tolmezzo to Obernkirchen | 441.55 mi (710.60 km) |
| Tolmezzo to Oberschleissheim | 144.74 mi (232.93 km) |
| Tolmezzo to Oberstdorf | 146.84 mi (236.32 km) |
| Tolmezzo to Obertraubling | 181.63 mi (292.30 km) |
| Tolmezzo to Obertshausen | 318.09 mi (511.92 km) |
| Tolmezzo to Oberursel | 332.58 mi (535.24 km) |
| Tolmezzo to Ochsenfurt | 262.64 mi (422.68 km) |
| Tolmezzo to Ochsenhausen | 184.56 mi (297.02 km) |
| Tolmezzo to Ochtrup | 479.04 mi (770.94 km) |
| Tolmezzo to Odenthal | 417.84 mi (672.46 km) |
| Tolmezzo to Oelde | 434.94 mi (699.96 km) |
| Tolmezzo to Oelsnitz | 280.25 mi (451.01 km) |
| Tolmezzo to Oer-Erkenschwick | 446.29 mi (718.23 km) |
