| Moses Lake to Olympia Heights (Florida) | 2,581.19 mi (4,154.03 km) |
| Moses Lake to Omaha (Nebraska) | 1,214.24 mi (1,954.14 km) |
| Moses Lake to On Top of the World Designated Place (Florida) | 2,333.09 mi (3,754.74 km) |
| Moses Lake to Onalaska (Wisconsin) | 1,369.78 mi (2,204.45 km) |
| Moses Lake to Oneida (New York) | 2,117.36 mi (3,407.55 km) |
| Moses Lake to Oneonta (New York) | 2,162.19 mi (3,479.71 km) |
| Moses Lake to Ontario (California) | 908.51 mi (1,462.10 km) |
| Moses Lake to Ontario (Oregon) | 241.44 mi (388.56 km) |
| Moses Lake to Opa-locka (Florida) | 2,576.27 mi (4,146.11 km) |
| Moses Lake to Opelika (Alabama) | 2,033.61 mi (3,272.78 km) |
| Moses Lake to Opelousas (Louisiana) | 1,843.43 mi (2,966.71 km) |
| Moses Lake to Orange (California) | 923.73 mi (1,486.60 km) |
| Moses Lake to Orange (Texas) | 1,795.62 mi (2,889.77 km) |
| Moses Lake to Orange City (Florida) | 2,385.57 mi (3,839.20 km) |
| Moses Lake to Orangeburg (South Carolina) | 2,203.63 mi (3,546.39 km) |
