| Altamonte Springs to Olympia Heights (Florida) | 213.09 mi (342.94 km) |
| Altamonte Springs to Omaha (Nebraska) | 1,199.50 mi (1,930.40 km) |
| Altamonte Springs to On Top of the World Designated Place (Florida) | 62.05 mi (99.86 km) |
| Altamonte Springs to Onalaska (Wisconsin) | 1,183.51 mi (1,904.68 km) |
| Altamonte Springs to Oneida (New York) | 1,045.77 mi (1,683.01 km) |
| Altamonte Springs to Oneonta (New York) | 1,016.49 mi (1,635.88 km) |
| Altamonte Springs to Ontario (California) | 2,157.33 mi (3,471.88 km) |
| Altamonte Springs to Ontario (Oregon) | 2,222.78 mi (3,577.23 km) |
| Altamonte Springs to Opa-locka (Florida) | 203.26 mi (327.11 km) |
| Altamonte Springs to Opelika (Alabama) | 363.75 mi (585.41 km) |
| Altamonte Springs to Opelousas (Louisiana) | 654.54 mi (1,053.39 km) |
| Altamonte Springs to Orange (California) | 2,169.79 mi (3,491.93 km) |
| Altamonte Springs to Orange (Texas) | 750.82 mi (1,208.33 km) |
| Altamonte Springs to Orange City (Florida) | 19.97 mi (32.13 km) |
| Altamonte Springs to Orangeburg (South Carolina) | 335.27 mi (539.56 km) |
