| Clemmons to Oswego (Illinois) | 578.73 mi (931.38 km) |
| Clemmons to Oswego (New York) | 552.48 mi (889.13 km) |
| Clemmons to Otsego (Minnesota) | 940.26 mi (1,513.21 km) |
| Clemmons to Ottawa (Illinois) | 584.70 mi (940.98 km) |
| Clemmons to Ottawa (Kansas) | 835.54 mi (1,344.67 km) |
| Clemmons to Ottumwa (Iowa) | 735.12 mi (1,183.06 km) |
| Clemmons to Overland (Missouri) | 577.92 mi (930.08 km) |
| Clemmons to Overland Park (Kansas) | 807.81 mi (1,300.05 km) |
| Clemmons to Overlea (Maryland) | 312.57 mi (503.03 km) |
| Clemmons to Oviedo (Florida) | 511.62 mi (823.38 km) |
| Clemmons to Owasso (Oklahoma) | 860.85 mi (1,385.41 km) |
| Clemmons to Owatonna (Minnesota) | 876.52 mi (1,410.62 km) |
| Clemmons to Owensboro (Kentucky) | 390.47 mi (628.40 km) |
| Clemmons to Owings Mills (Maryland) | 305.10 mi (491.02 km) |
| Clemmons to Owosso (Michigan) | 521.68 mi (839.56 km) |
