| Moscow to Olympia Heights (Florida) | 2,471.31 mi (3,977.19 km) |
| Moscow to Omaha (Nebraska) | 1,103.47 mi (1,775.86 km) |
| Moscow to On Top of the World Designated Place (Florida) | 2,222.72 mi (3,577.12 km) |
| Moscow to Onalaska (Wisconsin) | 1,262.68 mi (2,032.09 km) |
| Moscow to Oneida (New York) | 2,015.07 mi (3,242.94 km) |
| Moscow to Oneonta (New York) | 2,059.32 mi (3,314.15 km) |
| Moscow to Ontario (California) | 877.47 mi (1,412.16 km) |
| Moscow to Ontario (Oregon) | 186.89 mi (300.78 km) |
| Moscow to Opa-locka (Florida) | 2,466.31 mi (3,969.14 km) |
| Moscow to Opelika (Alabama) | 1,922.95 mi (3,094.70 km) |
| Moscow to Opelousas (Louisiana) | 1,736.67 mi (2,794.90 km) |
| Moscow to Orange (California) | 894.21 mi (1,439.09 km) |
| Moscow to Orange (Texas) | 1,690.64 mi (2,720.83 km) |
| Moscow to Orange City (Florida) | 2,275.05 mi (3,661.34 km) |
| Moscow to Orangeburg (South Carolina) | 2,092.82 mi (3,368.06 km) |
