| Borgosesia to Olympia Heights (Florida) | 4,903.68 mi (7,891.71 km) |
| Borgosesia to Omaha (Nebraska) | 4,835.21 mi (7,781.52 km) |
| Borgosesia to On Top of the World Designated Place (Florida) | 4,835.19 mi (7,781.49 km) |
| Borgosesia to Onalaska (Wisconsin) | 4,530.93 mi (7,291.82 km) |
| Borgosesia to Oneida (New York) | 3,946.61 mi (6,351.46 km) |
| Borgosesia to Oneonta (New York) | 3,945.85 mi (6,350.23 km) |
| Borgosesia to Ontario (California) | 5,974.02 mi (9,614.25 km) |
| Borgosesia to Ontario (Oregon) | 5,389.55 mi (8,673.64 km) |
| Borgosesia to Opa-locka (Florida) | 4,891.65 mi (7,872.35 km) |
| Borgosesia to Opelika (Alabama) | 4,807.12 mi (7,736.30 km) |
| Borgosesia to Opelousas (Louisiana) | 5,195.27 mi (8,360.98 km) |
| Borgosesia to Orange (California) | 5,994.42 mi (9,647.09 km) |
| Borgosesia to Orange (Texas) | 5,285.70 mi (8,506.51 km) |
| Borgosesia to Orange City (Florida) | 4,798.17 mi (7,721.92 km) |
| Borgosesia to Orangeburg (South Carolina) | 4,572.63 mi (7,358.93 km) |
