| Oakville to Olympia Heights (Florida) | 1,054.02 mi (1,696.28 km) |
| Oakville to Omaha (Nebraska) | 360.83 mi (580.70 km) |
| Oakville to On Top of the World Designated Place (Florida) | 792.64 mi (1,275.63 km) |
| Oakville to Onalaska (Wisconsin) | 378.71 mi (609.48 km) |
| Oakville to Oneida (New York) | 829.64 mi (1,335.17 km) |
| Oakville to Oneonta (New York) | 846.98 mi (1,363.08 km) |
| Oakville to Ontario (California) | 1,544.78 mi (2,486.08 km) |
| Oakville to Ontario (Oregon) | 1,430.57 mi (2,302.28 km) |
| Oakville to Opa-locka (Florida) | 1,046.36 mi (1,683.95 km) |
| Oakville to Opelika (Alabama) | 486.70 mi (783.27 km) |
| Oakville to Opelousas (Louisiana) | 556.49 mi (895.58 km) |
| Oakville to Orange (California) | 1,561.86 mi (2,513.57 km) |
| Oakville to Orange (Texas) | 607.70 mi (978.00 km) |
| Oakville to Orange City (Florida) | 836.66 mi (1,346.48 km) |
| Oakville to Orangeburg (South Carolina) | 629.25 mi (1,012.67 km) |
