| Rosarno to Olympia Heights (Florida) | 5,451.57 mi (8,773.46 km) |
| Rosarno to Omaha (Nebraska) | 5,462.88 mi (8,791.66 km) |
| Rosarno to On Top of the World Designated Place (Florida) | 5,403.58 mi (8,696.23 km) |
| Rosarno to Onalaska (Wisconsin) | 5,157.80 mi (8,300.67 km) |
| Rosarno to Oneida (New York) | 4,551.90 mi (7,325.57 km) |
| Rosarno to Oneonta (New York) | 4,548.09 mi (7,319.44 km) |
| Rosarno to Ontario (California) | 6,610.40 mi (10,638.41 km) |
| Rosarno to Ontario (Oregon) | 6,024.49 mi (9,695.48 km) |
| Rosarno to Opa-locka (Florida) | 5,440.05 mi (8,754.91 km) |
| Rosarno to Opelika (Alabama) | 5,396.71 mi (8,685.16 km) |
| Rosarno to Opelousas (Louisiana) | 5,793.88 mi (9,324.34 km) |
| Rosarno to Orange (California) | 6,630.81 mi (10,671.25 km) |
| Rosarno to Orange (Texas) | 5,886.96 mi (9,474.15 km) |
| Rosarno to Orange City (Florida) | 5,362.93 mi (8,630.80 km) |
| Rosarno to Orangeburg (South Carolina) | 5,154.23 mi (8,294.93 km) |
