| San Sebastiano al Vesuvio to Orangevale (California) | 6,270.46 mi (10,091.33 km) |
| San Sebastiano al Vesuvio to Orchards (Washington) | 5,893.51 mi (9,484.69 km) |
| San Sebastiano al Vesuvio to Orcutt (California) | 6,470.02 mi (10,412.49 km) |
| San Sebastiano al Vesuvio to Oregon (Ohio) | 4,769.64 mi (7,675.99 km) |
| San Sebastiano al Vesuvio to Oregon (Wisconsin) | 4,955.76 mi (7,975.52 km) |
| San Sebastiano al Vesuvio to Oregon City (Oregon) | 5,915.58 mi (9,520.20 km) |
| San Sebastiano al Vesuvio to Orem (Utah) | 5,888.78 mi (9,477.08 km) |
| San Sebastiano al Vesuvio to Orinda (California) | 6,345.21 mi (10,211.64 km) |
| San Sebastiano al Vesuvio to Orland Park (Illinois) | 4,952.50 mi (7,970.27 km) |
| San Sebastiano al Vesuvio to Orlando (Florida) | 5,235.79 mi (8,426.19 km) |
| San Sebastiano al Vesuvio to Ormond Beach (Florida) | 5,189.06 mi (8,350.98 km) |
| San Sebastiano al Vesuvio to Oro Valley (Arizona) | 6,293.25 mi (10,128.01 km) |
| San Sebastiano al Vesuvio to Oroville (California) | 6,232.52 mi (10,030.27 km) |
| San Sebastiano al Vesuvio to Oshkosh (Wisconsin) | 4,875.85 mi (7,846.92 km) |
| San Sebastiano al Vesuvio to Oskaloosa (Iowa) | 5,155.80 mi (8,297.46 km) |
