| Medulla to Olympia Heights (Florida) | 184.72 mi (297.28 km) |
| Medulla to Omaha (Nebraska) | 1,215.31 mi (1,955.85 km) |
| Medulla to On Top of the World Designated Place (Florida) | 81.44 mi (131.06 km) |
| Medulla to Onalaska (Wisconsin) | 1,213.75 mi (1,953.34 km) |
| Medulla to Oneida (New York) | 1,102.71 mi (1,774.63 km) |
| Medulla to Oneonta (New York) | 1,074.23 mi (1,728.80 km) |
| Medulla to Ontario (California) | 2,139.93 mi (3,443.88 km) |
| Medulla to Ontario (Oregon) | 2,225.22 mi (3,581.14 km) |
| Medulla to Opa-locka (Florida) | 177.71 mi (285.99 km) |
| Medulla to Opelika (Alabama) | 382.74 mi (615.96 km) |
| Medulla to Opelousas (Louisiana) | 633.68 mi (1,019.81 km) |
| Medulla to Orange (California) | 2,151.92 mi (3,463.19 km) |
| Medulla to Orange (Texas) | 726.44 mi (1,169.09 km) |
| Medulla to Orange City (Florida) | 79.78 mi (128.39 km) |
| Medulla to Orangeburg (South Carolina) | 388.21 mi (624.77 km) |
