| Azpeitia to Olympia Heights (Florida) | 4,446.58 mi (7,156.08 km) |
| Azpeitia to Omaha (Nebraska) | 4,523.81 mi (7,280.37 km) |
| Azpeitia to On Top of the World Designated Place (Florida) | 4,400.38 mi (7,081.73 km) |
| Azpeitia to Onalaska (Wisconsin) | 4,217.87 mi (6,788.00 km) |
| Azpeitia to Oneida (New York) | 3,573.20 mi (5,750.50 km) |
| Azpeitia to Oneonta (New York) | 3,565.96 mi (5,738.85 km) |
| Azpeitia to Ontario (California) | 5,724.51 mi (9,212.71 km) |
| Azpeitia to Ontario (Oregon) | 5,191.86 mi (8,355.50 km) |
| Azpeitia to Opa-locka (Florida) | 4,435.04 mi (7,137.52 km) |
| Azpeitia to Opelika (Alabama) | 4,401.86 mi (7,084.11 km) |
| Azpeitia to Opelousas (Louisiana) | 4,804.59 mi (7,732.24 km) |
| Azpeitia to Orange (California) | 5,744.88 mi (9,245.49 km) |
| Azpeitia to Orange (Texas) | 4,899.77 mi (7,885.42 km) |
| Azpeitia to Orange City (Florida) | 4,359.06 mi (7,015.22 km) |
| Azpeitia to Orangeburg (South Carolina) | 4,155.62 mi (6,687.82 km) |
