| Volterra to Oerlinghausen | 600.61 mi (966.58 km) |
| Volterra to Oestrich-Winkel | 475.72 mi (765.60 km) |
| Volterra to Offenburg | 377.31 mi (607.23 km) |
| Volterra to Oftersheim | 426.57 mi (686.50 km) |
| Volterra to Ohrdruf | 513.27 mi (826.03 km) |
| Volterra to Ohringen | 406.00 mi (653.39 km) |
| Volterra to Olbernhau | 515.26 mi (829.23 km) |
| Volterra to Olching | 332.35 mi (534.87 km) |
| Volterra to Oldenburg | 684.08 mi (1,100.91 km) |
| Volterra to Oldenburg in Holstein | 753.12 mi (1,212.03 km) |
| Volterra to Olfen | 596.96 mi (960.71 km) |
| Volterra to Olpe | 545.06 mi (877.19 km) |
| Volterra to Olsberg | 560.42 mi (901.90 km) |
| Volterra to Oranienburg | 655.43 mi (1,054.81 km) |
| Volterra to Ortenberg | 488.11 mi (785.54 km) |
