| Galt to Olympia Heights (Florida) | 2,528.00 mi (4,068.42 km) |
| Galt to Omaha (Nebraska) | 1,351.83 mi (2,175.56 km) |
| Galt to On Top of the World Designated Place (Florida) | 2,311.92 mi (3,720.67 km) |
| Galt to Onalaska (Wisconsin) | 1,605.01 mi (2,583.02 km) |
| Galt to Oneida (New York) | 2,384.77 mi (3,837.92 km) |
| Galt to Oneonta (New York) | 2,420.98 mi (3,896.18 km) |
| Galt to Ontario (California) | 357.56 mi (575.45 km) |
| Galt to Ontario (Oregon) | 456.77 mi (735.11 km) |
| Galt to Opa-locka (Florida) | 2,526.39 mi (4,065.84 km) |
| Galt to Opelika (Alabama) | 2,045.13 mi (3,291.32 km) |
| Galt to Opelousas (Louisiana) | 1,741.14 mi (2,802.09 km) |
| Galt to Orange (California) | 364.60 mi (586.77 km) |
| Galt to Orange (Texas) | 1,663.91 mi (2,677.81 km) |
| Galt to Orange City (Florida) | 2,371.21 mi (3,816.10 km) |
| Galt to Orangeburg (South Carolina) | 2,269.31 mi (3,652.10 km) |
