| San Vicente de Castellet to Olympia Heights (Florida) | 4,675.96 mi (7,525.24 km) |
| San Vicente de Castellet to Omaha (Nebraska) | 4,755.91 mi (7,653.90 km) |
| San Vicente de Castellet to On Top of the World Designated Place (Florida) | 4,632.89 mi (7,455.92 km) |
| San Vicente de Castellet to Onalaska (Wisconsin) | 4,449.93 mi (7,161.46 km) |
| San Vicente de Castellet to Oneida (New York) | 3,808.27 mi (6,128.82 km) |
| San Vicente de Castellet to Oneonta (New York) | 3,801.13 mi (6,117.32 km) |
| San Vicente de Castellet to Ontario (California) | 5,950.71 mi (9,576.74 km) |
| San Vicente de Castellet to Ontario (Oregon) | 5,409.50 mi (8,705.74 km) |
| San Vicente de Castellet to Opa-locka (Florida) | 4,664.52 mi (7,506.82 km) |
| San Vicente de Castellet to Opelika (Alabama) | 4,636.54 mi (7,461.79 km) |
| San Vicente de Castellet to Opelousas (Louisiana) | 5,039.66 mi (8,110.55 km) |
| San Vicente de Castellet to Orange (California) | 5,971.10 mi (9,609.56 km) |
| San Vicente de Castellet to Orange (Texas) | 5,134.91 mi (8,263.84 km) |
| San Vicente de Castellet to Orange City (Florida) | 4,591.11 mi (7,388.67 km) |
| San Vicente de Castellet to Orangeburg (South Carolina) | 4,389.75 mi (7,064.62 km) |
