| Isla Vista to Olympia Heights (Florida) | 2,422.06 mi (3,897.93 km) |
| Isla Vista to Omaha (Nebraska) | 1,377.28 mi (2,216.52 km) |
| Isla Vista to On Top of the World Designated Place (Florida) | 2,224.85 mi (3,580.55 km) |
| Isla Vista to Onalaska (Wisconsin) | 1,658.28 mi (2,668.74 km) |
| Isla Vista to Oneida (New York) | 2,426.18 mi (3,904.55 km) |
| Isla Vista to Oneonta (New York) | 2,457.51 mi (3,954.99 km) |
| Isla Vista to Ontario (California) | 131.38 mi (211.44 km) |
| Isla Vista to Ontario (Oregon) | 681.80 mi (1,097.25 km) |
| Isla Vista to Opa-locka (Florida) | 2,421.92 mi (3,897.71 km) |
| Isla Vista to Opelika (Alabama) | 1,980.16 mi (3,186.75 km) |
| Isla Vista to Opelousas (Louisiana) | 1,636.22 mi (2,633.25 km) |
| Isla Vista to Orange (California) | 124.03 mi (199.61 km) |
| Isla Vista to Orange (Texas) | 1,548.90 mi (2,492.72 km) |
| Isla Vista to Orange City (Florida) | 2,285.68 mi (3,678.44 km) |
| Isla Vista to Orangeburg (South Carolina) | 2,221.85 mi (3,575.73 km) |
