| Viladecans to Olympia Heights (Florida) | 4,690.11 mi (7,548.00 km) |
| Viladecans to Omaha (Nebraska) | 4,776.90 mi (7,687.68 km) |
| Viladecans to On Top of the World Designated Place (Florida) | 4,648.50 mi (7,481.04 km) |
| Viladecans to Onalaska (Wisconsin) | 4,470.93 mi (7,195.26 km) |
| Viladecans to Oneida (New York) | 3,827.24 mi (6,159.35 km) |
| Viladecans to Oneonta (New York) | 3,819.82 mi (6,147.40 km) |
| Viladecans to Ontario (California) | 5,973.22 mi (9,612.97 km) |
| Viladecans to Ontario (Oregon) | 5,433.18 mi (8,743.86 km) |
| Viladecans to Opa-locka (Florida) | 4,678.70 mi (7,529.65 km) |
| Viladecans to Opelika (Alabama) | 4,653.78 mi (7,489.54 km) |
| Viladecans to Opelousas (Louisiana) | 5,057.50 mi (8,139.27 km) |
| Viladecans to Orange (California) | 5,993.61 mi (9,645.78 km) |
| Viladecans to Orange (Texas) | 5,152.95 mi (8,292.87 km) |
| Viladecans to Orange City (Florida) | 4,606.46 mi (7,413.39 km) |
| Viladecans to Orangeburg (South Carolina) | 4,406.45 mi (7,091.50 km) |
