| San Buenaventura to Olympia (Washington) | 902.55 mi (1,452.51 km) |
| San Buenaventura to Olympia Heights (Florida) | 2,385.59 mi (3,839.24 km) |
| San Buenaventura to Omaha (Nebraska) | 1,349.80 mi (2,172.30 km) |
| San Buenaventura to On Top of the World Designated Place (Florida) | 2,189.08 mi (3,522.99 km) |
| San Buenaventura to Onalaska (Wisconsin) | 1,632.92 mi (2,627.94 km) |
| San Buenaventura to Oneida (New York) | 2,398.85 mi (3,860.58 km) |
| San Buenaventura to Oneonta (New York) | 2,429.73 mi (3,910.27 km) |
| San Buenaventura to Ontario (California) | 94.31 mi (151.78 km) |
| San Buenaventura to Ontario (Oregon) | 684.46 mi (1,101.53 km) |
| San Buenaventura to Opa-locka (Florida) | 2,385.50 mi (3,839.09 km) |
| San Buenaventura to Opelika (Alabama) | 1,945.50 mi (3,130.97 km) |
| San Buenaventura to Opelousas (Louisiana) | 1,600.01 mi (2,574.97 km) |
| San Buenaventura to Orange (California) | 87.00 mi (140.01 km) |
| San Buenaventura to Orange (Texas) | 1,512.41 mi (2,433.99 km) |
| San Buenaventura to Orange City (Florida) | 2,249.95 mi (3,620.95 km) |
