| Manchester to Olympia Heights (Florida) | 4,328.70 mi (6,966.38 km) |
| Manchester to Omaha (Nebraska) | 4,144.20 mi (6,669.44 km) |
| Manchester to On Top of the World Designated Place (Florida) | 4,232.67 mi (6,811.82 km) |
| Manchester to Onalaska (Wisconsin) | 3,841.92 mi (6,182.98 km) |
| Manchester to Oneida (New York) | 3,296.16 mi (5,304.66 km) |
| Manchester to Oneonta (New York) | 3,300.36 mi (5,311.41 km) |
| Manchester to Ontario (California) | 5,264.54 mi (8,472.45 km) |
| Manchester to Ontario (Oregon) | 4,677.41 mi (7,527.56 km) |
| Manchester to Opa-locka (Florida) | 4,316.13 mi (6,946.13 km) |
| Manchester to Opelika (Alabama) | 4,174.71 mi (6,718.55 km) |
| Manchester to Opelousas (Louisiana) | 4,547.53 mi (7,318.54 km) |
| Manchester to Orange (California) | 5,284.92 mi (8,505.26 km) |
| Manchester to Orange (Texas) | 4,633.70 mi (7,457.22 km) |
| Manchester to Orange City (Florida) | 4,201.10 mi (6,761.02 km) |
| Manchester to Orangeburg (South Carolina) | 3,953.65 mi (6,362.78 km) |
