| Codogno to Olympia Heights (Florida) | 4,981.94 mi (8,017.66 km) |
| Codogno to Omaha (Nebraska) | 4,913.44 mi (7,907.42 km) |
| Codogno to On Top of the World Designated Place (Florida) | 4,914.27 mi (7,908.76 km) |
| Codogno to Onalaska (Wisconsin) | 4,609.29 mi (7,417.93 km) |
| Codogno to Oneida (New York) | 4,026.21 mi (6,479.56 km) |
| Codogno to Oneonta (New York) | 4,025.47 mi (6,478.37 km) |
| Codogno to Ontario (California) | 6,049.15 mi (9,735.17 km) |
| Codogno to Ontario (Oregon) | 5,461.90 mi (8,790.08 km) |
| Codogno to Opa-locka (Florida) | 4,969.94 mi (7,998.34 km) |
| Codogno to Opelika (Alabama) | 4,886.70 mi (7,864.38 km) |
| Codogno to Opelousas (Louisiana) | 5,274.90 mi (8,489.14 km) |
| Codogno to Orange (California) | 6,069.55 mi (9,768.00 km) |
| Codogno to Orange (Texas) | 5,365.32 mi (8,634.64 km) |
| Codogno to Orange City (Florida) | 4,877.13 mi (7,848.97 km) |
| Codogno to Orangeburg (South Carolina) | 4,652.06 mi (7,486.77 km) |
