| Fortuna to Olympia Heights (Florida) | 4,585.86 mi (7,380.22 km) |
| Fortuna to Omaha (Nebraska) | 4,773.74 mi (7,682.60 km) |
| Fortuna to On Top of the World Designated Place (Florida) | 4,562.59 mi (7,342.77 km) |
| Fortuna to Onalaska (Wisconsin) | 4,468.92 mi (7,192.03 km) |
| Fortuna to Oneida (New York) | 3,792.13 mi (6,102.84 km) |
| Fortuna to Oneonta (New York) | 3,780.40 mi (6,083.96 km) |
| Fortuna to Ontario (California) | 5,998.49 mi (9,653.63 km) |
| Fortuna to Ontario (Oregon) | 5,489.37 mi (8,834.30 km) |
| Fortuna to Opa-locka (Florida) | 4,574.94 mi (7,362.66 km) |
| Fortuna to Opelika (Alabama) | 4,589.98 mi (7,386.87 km) |
| Fortuna to Opelousas (Louisiana) | 5,001.28 mi (8,048.79 km) |
| Fortuna to Orange (California) | 6,018.74 mi (9,686.22 km) |
| Fortuna to Orange (Texas) | 5,099.39 mi (8,206.67 km) |
| Fortuna to Orange City (Florida) | 4,517.45 mi (7,270.13 km) |
| Fortuna to Orangeburg (South Carolina) | 4,335.84 mi (6,977.87 km) |
