| Doncaster to Olympia Heights (Florida) | 4,373.60 mi (7,038.63 km) |
| Doncaster to Omaha (Nebraska) | 4,182.10 mi (6,730.45 km) |
| Doncaster to On Top of the World Designated Place (Florida) | 4,276.84 mi (6,882.90 km) |
| Doncaster to Onalaska (Wisconsin) | 3,880.20 mi (6,244.57 km) |
| Doncaster to Oneida (New York) | 3,338.31 mi (5,372.50 km) |
| Doncaster to Oneonta (New York) | 3,342.82 mi (5,379.74 km) |
| Doncaster to Ontario (California) | 5,297.62 mi (8,525.69 km) |
| Doncaster to Ontario (Oregon) | 4,707.30 mi (7,575.67 km) |
| Doncaster to Opa-locka (Florida) | 4,361.01 mi (7,018.37 km) |
| Doncaster to Opelika (Alabama) | 4,217.67 mi (6,787.68 km) |
| Doncaster to Opelousas (Louisiana) | 4,589.54 mi (7,386.16 km) |
| Doncaster to Orange (California) | 5,317.99 mi (8,558.48 km) |
| Doncaster to Orange (Texas) | 4,675.41 mi (7,524.35 km) |
| Doncaster to Orange City (Florida) | 4,245.44 mi (6,832.38 km) |
| Doncaster to Orangeburg (South Carolina) | 3,997.26 mi (6,432.98 km) |
