| Stone to Orbetello | 950.26 mi (1,529.30 km) |
| Stone to Oria | 1,262.20 mi (2,031.31 km) |
| Stone to Oristano | 1,030.89 mi (1,659.06 km) |
| Stone to Orta Nova | 1,153.46 mi (1,856.32 km) |
| Stone to Orte | 985.06 mi (1,585.30 km) |
| Stone to Ortona | 1,056.09 mi (1,699.61 km) |
| Stone to Orvieto | 962.37 mi (1,548.79 km) |
| Stone to Orzinuovi | 750.97 mi (1,208.58 km) |
| Stone to Osimo | 966.69 mi (1,555.74 km) |
| Stone to Ospitaletto | 747.63 mi (1,203.20 km) |
| Stone to Ostuni | 1,248.29 mi (2,008.93 km) |
| Stone to Ottaviano | 1,139.11 mi (1,833.22 km) |
| Stone to Ovada | 751.69 mi (1,209.73 km) |
| Stone to Ozieri | 998.85 mi (1,607.49 km) |
| Stone to Paceco | 1,247.74 mi (2,008.05 km) |
