| Ath to Olympia Heights (Florida) | 4,614.41 mi (7,426.18 km) |
| Ath to Omaha (Nebraska) | 4,465.74 mi (7,186.92 km) |
| Ath to On Top of the World Designated Place (Florida) | 4,528.09 mi (7,287.26 km) |
| Ath to Onalaska (Wisconsin) | 4,163.04 mi (6,699.76 km) |
| Ath to Oneida (New York) | 3,606.64 mi (5,804.33 km) |
| Ath to Oneonta (New York) | 3,609.25 mi (5,808.53 km) |
| Ath to Ontario (California) | 5,586.59 mi (8,990.74 km) |
| Ath to Ontario (Oregon) | 4,995.79 mi (8,039.94 km) |
| Ath to Opa-locka (Florida) | 4,602.02 mi (7,406.23 km) |
| Ath to Opelika (Alabama) | 4,480.19 mi (7,210.18 km) |
| Ath to Opelousas (Louisiana) | 4,858.14 mi (7,818.42 km) |
| Ath to Orange (California) | 5,606.97 mi (9,023.54 km) |
| Ath to Orange (Texas) | 4,945.64 mi (7,959.23 km) |
| Ath to Orange City (Florida) | 4,494.56 mi (7,233.30 km) |
| Ath to Orangeburg (South Carolina) | 4,254.42 mi (6,846.83 km) |
