| Galion to Olympia Heights (Florida) | 1,046.82 mi (1,684.69 km) |
| Galion to Omaha (Nebraska) | 692.43 mi (1,114.35 km) |
| Galion to On Top of the World Designated Place (Florida) | 804.22 mi (1,294.27 km) |
| Galion to Onalaska (Wisconsin) | 482.17 mi (775.97 km) |
| Galion to Oneida (New York) | 399.86 mi (643.52 km) |
| Galion to Oneonta (New York) | 415.61 mi (668.86 km) |
| Galion to Ontario (California) | 1,953.42 mi (3,143.72 km) |
| Galion to Ontario (Oregon) | 1,747.30 mi (2,812.01 km) |
| Galion to Opa-locka (Florida) | 1,035.43 mi (1,666.37 km) |
| Galion to Opelika (Alabama) | 576.26 mi (927.40 km) |
| Galion to Opelousas (Louisiana) | 876.83 mi (1,411.12 km) |
| Galion to Orange (California) | 1,971.35 mi (3,172.58 km) |
| Galion to Orange (Texas) | 957.64 mi (1,541.17 km) |
| Galion to Orange City (Florida) | 819.89 mi (1,319.49 km) |
| Galion to Orangeburg (South Carolina) | 511.55 mi (823.27 km) |
