| Villanueva y Geltru to Olympia Heights (Florida) | 4,677.09 mi (7,527.05 km) |
| Villanueva y Geltru to Omaha (Nebraska) | 4,768.57 mi (7,674.27 km) |
| Villanueva y Geltru to On Top of the World Designated Place (Florida) | 4,636.24 mi (7,461.30 km) |
| Villanueva y Geltru to Onalaska (Wisconsin) | 4,462.61 mi (7,181.88 km) |
| Villanueva y Geltru to Oneida (New York) | 3,817.17 mi (6,143.14 km) |
| Villanueva y Geltru to Oneonta (New York) | 3,809.54 mi (6,130.86 km) |
| Villanueva y Geltru to Ontario (California) | 5,966.57 mi (9,602.27 km) |
| Villanueva y Geltru to Ontario (Oregon) | 5,428.23 mi (8,735.89 km) |
| Villanueva y Geltru to Opa-locka (Florida) | 4,665.70 mi (7,508.73 km) |
| Villanueva y Geltru to Opelika (Alabama) | 4,642.48 mi (7,471.36 km) |
| Villanueva y Geltru to Opelousas (Louisiana) | 5,046.60 mi (8,121.71 km) |
| Villanueva y Geltru to Orange (California) | 5,986.96 mi (9,635.08 km) |
| Villanueva y Geltru to Orange (Texas) | 5,142.17 mi (8,275.53 km) |
| Villanueva y Geltru to Orange City (Florida) | 4,594.06 mi (7,393.43 km) |
| Villanueva y Geltru to Orangeburg (South Carolina) | 4,394.82 mi (7,072.78 km) |
