| Sirvintos to Orbetello | 1,068.47 mi (1,719.54 km) |
| Sirvintos to Oria | 1,059.15 mi (1,704.53 km) |
| Sirvintos to Oristano | 1,288.49 mi (2,073.63 km) |
| Sirvintos to Orta Nova | 1,036.46 mi (1,668.02 km) |
| Sirvintos to Orte | 1,037.50 mi (1,669.69 km) |
| Sirvintos to Ortona | 997.82 mi (1,605.84 km) |
| Sirvintos to Orvieto | 1,028.81 mi (1,655.71 km) |
| Sirvintos to Orzinuovi | 937.08 mi (1,508.09 km) |
| Sirvintos to Osimo | 948.84 mi (1,527.02 km) |
| Sirvintos to Ospitaletto | 924.49 mi (1,487.82 km) |
| Sirvintos to Ostuni | 1,044.40 mi (1,680.81 km) |
| Sirvintos to Ottaviano | 1,091.10 mi (1,755.96 km) |
| Sirvintos to Ovada | 1,017.58 mi (1,637.63 km) |
| Sirvintos to Ozieri | 1,237.05 mi (1,990.85 km) |
| Sirvintos to Paceco | 1,313.42 mi (2,113.74 km) |
