| Orta Nova to Olympia Heights (Florida) | 5,359.20 mi (8,624.79 km) |
| Orta Nova to Omaha (Nebraska) | 5,314.90 mi (8,553.50 km) |
| Orta Nova to On Top of the World Designated Place (Florida) | 5,299.86 mi (8,529.30 km) |
| Orta Nova to Onalaska (Wisconsin) | 5,010.79 mi (8,064.09 km) |
| Orta Nova to Oneida (New York) | 4,424.07 mi (7,119.85 km) |
| Orta Nova to Oneonta (New York) | 4,422.47 mi (7,117.27 km) |
| Orta Nova to Ontario (California) | 6,445.03 mi (10,372.27 km) |
| Orta Nova to Ontario (Oregon) | 5,850.08 mi (9,414.80 km) |
| Orta Nova to Opa-locka (Florida) | 5,347.40 mi (8,605.80 km) |
| Orta Nova to Opelika (Alabama) | 5,280.04 mi (8,497.40 km) |
| Orta Nova to Opelousas (Louisiana) | 5,671.25 mi (9,127.00 km) |
| Orta Nova to Orange (California) | 6,465.41 mi (10,405.07 km) |
| Orta Nova to Orange (Texas) | 5,762.47 mi (9,273.79 km) |
| Orta Nova to Orange City (Florida) | 5,261.26 mi (8,467.17 km) |
| Orta Nova to Orangeburg (South Carolina) | 5,042.49 mi (8,115.11 km) |
