| Mitchell to Olympia Heights (Florida) | 1,591.95 mi (2,562.00 km) |
| Mitchell to Omaha (Nebraska) | 198.05 mi (318.73 km) |
| Mitchell to On Top of the World Designated Place (Florida) | 1,332.20 mi (2,143.97 km) |
| Mitchell to Onalaska (Wisconsin) | 340.44 mi (547.89 km) |
| Mitchell to Oneida (New York) | 1,120.52 mi (1,803.30 km) |
| Mitchell to Oneonta (New York) | 1,158.44 mi (1,864.32 km) |
| Mitchell to Ontario (California) | 1,242.71 mi (1,999.94 km) |
| Mitchell to Ontario (Oregon) | 941.55 mi (1,515.27 km) |
| Mitchell to Opa-locka (Florida) | 1,584.86 mi (2,550.58 km) |
| Mitchell to Opelika (Alabama) | 1,025.78 mi (1,650.84 km) |
| Mitchell to Opelousas (Louisiana) | 968.77 mi (1,559.08 km) |
| Mitchell to Orange (California) | 1,262.50 mi (2,031.80 km) |
| Mitchell to Orange (Texas) | 968.94 mi (1,559.36 km) |
| Mitchell to Orange City (Florida) | 1,377.97 mi (2,217.62 km) |
| Mitchell to Orangeburg (South Carolina) | 1,161.92 mi (1,869.92 km) |
