| Santa Rosa to Olympia (Washington) | 594.00 mi (955.94 km) |
| Santa Rosa to Olympia Heights (Florida) | 2,605.12 mi (4,192.53 km) |
| Santa Rosa to Omaha (Nebraska) | 1,421.40 mi (2,287.53 km) |
| Santa Rosa to On Top of the World Designated Place (Florida) | 2,388.73 mi (3,844.29 km) |
| Santa Rosa to Onalaska (Wisconsin) | 1,670.13 mi (2,687.82 km) |
| Santa Rosa to Oneida (New York) | 2,450.27 mi (3,943.32 km) |
| Santa Rosa to Oneonta (New York) | 2,487.13 mi (4,002.66 km) |
| Santa Rosa to Ontario (California) | 416.35 mi (670.06 km) |
| Santa Rosa to Ontario (Oregon) | 486.87 mi (783.54 km) |
| Santa Rosa to Opa-locka (Florida) | 2,603.50 mi (4,189.93 km) |
| Santa Rosa to Opelika (Alabama) | 2,121.23 mi (3,413.78 km) |
| Santa Rosa to Opelousas (Louisiana) | 1,818.29 mi (2,926.26 km) |
| Santa Rosa to Orange (California) | 420.80 mi (677.21 km) |
| Santa Rosa to Orange (Texas) | 1,741.03 mi (2,801.91 km) |
| Santa Rosa to Orange City (Florida) | 2,447.97 mi (3,939.63 km) |
