| Signa to Olympia Heights (Florida) | 5,078.45 mi (8,172.98 km) |
| Signa to Omaha (Nebraska) | 5,027.60 mi (8,091.14 km) |
| Signa to On Top of the World Designated Place (Florida) | 5,015.06 mi (8,070.96 km) |
| Signa to Onalaska (Wisconsin) | 4,723.20 mi (7,601.26 km) |
| Signa to Oneida (New York) | 4,134.80 mi (6,654.32 km) |
| Signa to Oneonta (New York) | 4,133.36 mi (6,652.00 km) |
| Signa to Ontario (California) | 6,166.10 mi (9,923.38 km) |
| Signa to Ontario (Oregon) | 5,579.28 mi (8,978.98 km) |
| Signa to Opa-locka (Florida) | 5,066.54 mi (8,153.81 km) |
| Signa to Opelika (Alabama) | 4,992.03 mi (8,033.90 km) |
| Signa to Opelousas (Louisiana) | 5,382.33 mi (8,662.03 km) |
| Signa to Orange (California) | 6,186.50 mi (9,956.21 km) |
| Signa to Orange (Texas) | 5,473.36 mi (8,808.52 km) |
| Signa to Orange City (Florida) | 4,977.12 mi (8,009.91 km) |
| Signa to Orangeburg (South Carolina) | 4,755.58 mi (7,653.36 km) |
