| Tessenderlo to Olympia Heights (Florida) | 4,663.46 mi (7,505.12 km) |
| Tessenderlo to Omaha (Nebraska) | 4,494.81 mi (7,233.70 km) |
| Tessenderlo to On Top of the World Designated Place (Florida) | 4,574.06 mi (7,361.23 km) |
| Tessenderlo to Onalaska (Wisconsin) | 4,192.90 mi (6,747.81 km) |
| Tessenderlo to Oneida (New York) | 3,645.83 mi (5,867.40 km) |
| Tessenderlo to Oneonta (New York) | 3,649.31 mi (5,873.00 km) |
| Tessenderlo to Ontario (California) | 5,605.64 mi (9,021.40 km) |
| Tessenderlo to Ontario (Oregon) | 5,009.00 mi (8,061.21 km) |
| Tessenderlo to Opa-locka (Florida) | 4,651.01 mi (7,485.08 km) |
| Tessenderlo to Opelika (Alabama) | 4,522.07 mi (7,277.57 km) |
| Tessenderlo to Opelousas (Louisiana) | 4,897.36 mi (7,881.53 km) |
| Tessenderlo to Orange (California) | 5,625.99 mi (9,054.16 km) |
| Tessenderlo to Orange (Texas) | 4,984.05 mi (8,021.06 km) |
| Tessenderlo to Orange City (Florida) | 4,541.20 mi (7,308.35 km) |
| Tessenderlo to Orangeburg (South Carolina) | 4,298.33 mi (6,917.49 km) |
