| Silverton to Orbetello | 5,763.12 mi (9,274.85 km) |
| Silverton to Oria | 6,040.61 mi (9,721.42 km) |
| Silverton to Oristano | 5,841.12 mi (9,400.38 km) |
| Silverton to Orta Nova | 5,943.46 mi (9,565.07 km) |
| Silverton to Orte | 5,792.20 mi (9,321.64 km) |
| Silverton to Ortona | 5,849.39 mi (9,413.69 km) |
| Silverton to Orvieto | 5,769.74 mi (9,285.49 km) |
| Silverton to Orzinuovi | 5,555.26 mi (8,940.33 km) |
| Silverton to Osimo | 5,758.41 mi (9,267.27 km) |
| Silverton to Ospitaletto | 5,549.71 mi (8,931.40 km) |
| Silverton to Ostuni | 6,025.04 mi (9,696.37 km) |
| Silverton to Ottaviano | 5,942.14 mi (9,562.95 km) |
| Silverton to Ovada | 5,566.32 mi (8,958.12 km) |
| Silverton to Ozieri | 5,812.92 mi (9,354.99 km) |
| Silverton to Paceco | 6,064.54 mi (9,759.93 km) |
