| Mus to Olympia Heights (Florida) | 6,611.19 mi (10,639.69 km) |
| Mus to Omaha (Nebraska) | 6,297.45 mi (10,134.77 km) |
| Mus to On Top of the World Designated Place (Florida) | 6,513.90 mi (10,483.11 km) |
| Mus to Onalaska (Wisconsin) | 6,010.37 mi (9,672.76 km) |
| Mus to Oneida (New York) | 5,552.97 mi (8,936.63 km) |
| Mus to Oneonta (New York) | 5,562.08 mi (8,951.31 km) |
| Mus to Ontario (California) | 7,233.52 mi (11,641.23 km) |
| Mus to Ontario (Oregon) | 6,562.82 mi (10,561.84 km) |
| Mus to Opa-locka (Florida) | 6,598.67 mi (10,619.54 km) |
| Mus to Opelika (Alabama) | 6,441.57 mi (10,366.71 km) |
| Mus to Opelousas (Louisiana) | 6,795.88 mi (10,936.92 km) |
| Mus to Orange (California) | 7,252.65 mi (11,672.01 km) |
| Mus to Orange (Texas) | 6,875.34 mi (11,064.79 km) |
| Mus to Orange City (Florida) | 6,483.40 mi (10,434.02 km) |
| Mus to Orangeburg (South Carolina) | 6,229.87 mi (10,026.00 km) |
