| San Sebastiano al Vesuvio to Odessa (Texas) | 5,994.46 mi (9,647.16 km) |
| San Sebastiano al Vesuvio to Ogden (Utah) | 5,846.64 mi (9,409.26 km) |
| San Sebastiano al Vesuvio to Oildale (California) | 6,394.76 mi (10,291.38 km) |
| San Sebastiano al Vesuvio to Ojus (Florida) | 5,289.54 mi (8,512.69 km) |
| San Sebastiano al Vesuvio to Okemos (Michigan) | 4,766.45 mi (7,670.87 km) |
| San Sebastiano al Vesuvio to Oklahoma City (Oklahoma) | 5,623.33 mi (9,049.87 km) |
| San Sebastiano al Vesuvio to Okmulgee (Oklahoma) | 5,555.73 mi (8,941.09 km) |
| San Sebastiano al Vesuvio to Olathe (Kansas) | 5,352.91 mi (8,614.68 km) |
| San Sebastiano al Vesuvio to Old Jamestown (Missouri) | 5,173.07 mi (8,325.25 km) |
| San Sebastiano al Vesuvio to Oldsmar (Florida) | 5,317.22 mi (8,557.24 km) |
| San Sebastiano al Vesuvio to Olean (New York) | 4,542.57 mi (7,310.55 km) |
| San Sebastiano al Vesuvio to Olive Branch (Mississippi) | 5,330.46 mi (8,578.54 km) |
| San Sebastiano al Vesuvio to Olivehurst (California) | 6,257.03 mi (10,069.71 km) |
| San Sebastiano al Vesuvio to Olney (Maryland) | 4,597.69 mi (7,399.26 km) |
| San Sebastiano al Vesuvio to Olympia (Washington) | 5,822.54 mi (9,370.47 km) |
