| Volterra to Oberkirch | 378.96 mi (609.88 km) |
| Volterra to Obernburg am Main | 452.40 mi (728.06 km) |
| Volterra to Obernkirchen | 617.91 mi (994.42 km) |
| Volterra to Oberschleissheim | 336.79 mi (542.01 km) |
| Volterra to Oberstdorf | 278.50 mi (448.21 km) |
| Volterra to Obertraubling | 389.54 mi (626.90 km) |
| Volterra to Obertshausen | 470.53 mi (757.25 km) |
| Volterra to Oberursel | 482.31 mi (776.21 km) |
| Volterra to Ochsenfurt | 433.50 mi (697.65 km) |
| Volterra to Ochsenhausen | 325.84 mi (524.38 km) |
| Volterra to Ochtrup | 631.66 mi (1,016.56 km) |
| Volterra to Odenthal | 555.81 mi (894.48 km) |
| Volterra to Oelde | 596.15 mi (959.41 km) |
| Volterra to Oelsnitz | 488.65 mi (786.41 km) |
| Volterra to Oer-Erkenschwick | 593.75 mi (955.55 km) |
