| Elkhorn to Olympia Heights (Florida) | 1,259.64 mi (2,027.19 km) |
| Elkhorn to Omaha (Nebraska) | 398.00 mi (640.53 km) |
| Elkhorn to On Top of the World Designated Place (Florida) | 999.71 mi (1,608.88 km) |
| Elkhorn to Onalaska (Wisconsin) | 158.43 mi (254.97 km) |
| Elkhorn to Oneida (New York) | 651.91 mi (1,049.15 km) |
| Elkhorn to Oneonta (New York) | 684.97 mi (1,102.36 km) |
| Elkhorn to Ontario (California) | 1,673.92 mi (2,693.91 km) |
| Elkhorn to Ontario (Oregon) | 1,424.82 mi (2,293.02 km) |
| Elkhorn to Opa-locka (Florida) | 1,249.97 mi (2,011.64 km) |
| Elkhorn to Opelika (Alabama) | 712.76 mi (1,147.07 km) |
| Elkhorn to Opelousas (Louisiana) | 861.70 mi (1,386.78 km) |
| Elkhorn to Orange (California) | 1,692.70 mi (2,724.14 km) |
| Elkhorn to Orange (Texas) | 913.90 mi (1,470.78 km) |
| Elkhorn to Orange City (Florida) | 1,031.37 mi (1,659.83 km) |
| Elkhorn to Orangeburg (South Carolina) | 758.32 mi (1,220.39 km) |
