| Kemp Mill to Olympia Heights (Florida) | 940.07 mi (1,512.89 km) |
| Kemp Mill to Omaha (Nebraska) | 1,014.61 mi (1,632.85 km) |
| Kemp Mill to On Top of the World Designated Place (Florida) | 749.32 mi (1,205.91 km) |
| Kemp Mill to Onalaska (Wisconsin) | 805.82 mi (1,296.85 km) |
| Kemp Mill to Oneida (New York) | 287.68 mi (462.98 km) |
| Kemp Mill to Oneonta (New York) | 257.10 mi (413.76 km) |
| Kemp Mill to Ontario (California) | 2,260.41 mi (3,637.77 km) |
| Kemp Mill to Ontario (Oregon) | 2,074.21 mi (3,338.11 km) |
| Kemp Mill to Opa-locka (Florida) | 927.16 mi (1,492.12 km) |
| Kemp Mill to Opelika (Alabama) | 642.31 mi (1,033.69 km) |
| Kemp Mill to Opelousas (Louisiana) | 1,035.34 mi (1,666.21 km) |
| Kemp Mill to Orange (California) | 2,277.76 mi (3,665.70 km) |
| Kemp Mill to Orange (Texas) | 1,131.33 mi (1,820.70 km) |
| Kemp Mill to Orange City (Florida) | 739.58 mi (1,190.23 km) |
| Kemp Mill to Orangeburg (South Carolina) | 439.04 mi (706.57 km) |
