| Viareggio to Oberkirch | 338.61 mi (544.94 km) |
| Viareggio to Obernburg am Main | 415.98 mi (669.46 km) |
| Viareggio to Obernkirchen | 582.66 mi (937.70 km) |
| Viareggio to Oberschleissheim | 309.31 mi (497.79 km) |
| Viareggio to Oberstdorf | 244.77 mi (393.91 km) |
| Viareggio to Obertraubling | 363.88 mi (585.61 km) |
| Viareggio to Obertshausen | 433.50 mi (697.66 km) |
| Viareggio to Oberursel | 444.79 mi (715.82 km) |
| Viareggio to Ochsenfurt | 399.65 mi (643.17 km) |
| Viareggio to Ochsenhausen | 290.90 mi (468.16 km) |
| Viareggio to Ochtrup | 593.08 mi (954.47 km) |
| Viareggio to Odenthal | 516.20 mi (830.74 km) |
| Viareggio to Oelde | 558.89 mi (899.45 km) |
| Viareggio to Oelsnitz | 461.36 mi (742.48 km) |
| Viareggio to Oer-Erkenschwick | 554.85 mi (892.95 km) |
