| Duragan to Olympia Heights (Florida) | 6,228.45 mi (10,023.73 km) |
| Duragan to Omaha (Nebraska) | 5,958.13 mi (9,588.68 km) |
| Duragan to On Top of the World Designated Place (Florida) | 6,135.67 mi (9,874.41 km) |
| Duragan to Onalaska (Wisconsin) | 5,666.45 mi (9,119.27 km) |
| Duragan to Oneida (New York) | 5,185.03 mi (8,344.49 km) |
| Duragan to Oneonta (New York) | 5,192.54 mi (8,356.59 km) |
| Duragan to Ontario (California) | 6,941.68 mi (11,171.56 km) |
| Duragan to Ontario (Oregon) | 6,283.55 mi (10,112.39 km) |
| Duragan to Opa-locka (Florida) | 6,216.00 mi (10,003.68 km) |
| Duragan to Opelika (Alabama) | 6,070.80 mi (9,770.01 km) |
| Duragan to Opelousas (Louisiana) | 6,432.05 mi (10,351.39 km) |
| Duragan to Orange (California) | 6,961.24 mi (11,203.04 km) |
| Duragan to Orange (Texas) | 6,513.79 mi (10,482.92 km) |
| Duragan to Orange City (Florida) | 6,104.07 mi (9,823.55 km) |
| Duragan to Orangeburg (South Carolina) | 5,854.83 mi (9,422.43 km) |
