| San Feliu de Guixols to Olympia Heights (Florida) | 4,731.79 mi (7,615.07 km) |
| San Feliu de Guixols to Omaha (Nebraska) | 4,798.95 mi (7,723.16 km) |
| San Feliu de Guixols to On Top of the World Designated Place (Florida) | 4,686.90 mi (7,542.84 km) |
| San Feliu de Guixols to Onalaska (Wisconsin) | 4,492.95 mi (7,230.71 km) |
| San Feliu de Guixols to Oneida (New York) | 3,856.51 mi (6,206.46 km) |
| San Feliu de Guixols to Oneonta (New York) | 3,849.95 mi (6,195.89 km) |
| San Feliu de Guixols to Ontario (California) | 5,988.41 mi (9,637.41 km) |
| San Feliu de Guixols to Ontario (Oregon) | 5,441.82 mi (8,757.77 km) |
| San Feliu de Guixols to Opa-locka (Florida) | 4,720.30 mi (7,596.59 km) |
| San Feliu de Guixols to Opelika (Alabama) | 4,688.04 mi (7,544.67 km) |
| San Feliu de Guixols to Opelousas (Louisiana) | 5,090.07 mi (8,191.68 km) |
| San Feliu de Guixols to Orange (California) | 6,008.81 mi (9,670.25 km) |
| San Feliu de Guixols to Orange (Texas) | 5,184.94 mi (8,344.36 km) |
| San Feliu de Guixols to Orange City (Florida) | 4,645.45 mi (7,476.13 km) |
| San Feliu de Guixols to Orangeburg (South Carolina) | 4,442.15 mi (7,148.96 km) |
