| Front Royal to Oswego (Illinois) | 567.48 mi (913.27 km) |
| Front Royal to Oswego (New York) | 324.69 mi (522.53 km) |
| Front Royal to Otsego (Minnesota) | 902.38 mi (1,452.24 km) |
| Front Royal to Ottawa (Illinois) | 586.20 mi (943.40 km) |
| Front Royal to Ottawa (Kansas) | 919.11 mi (1,479.16 km) |
| Front Royal to Ottumwa (Iowa) | 766.57 mi (1,233.67 km) |
| Front Royal to Overland (Missouri) | 655.73 mi (1,055.30 km) |
| Front Royal to Overland Park (Kansas) | 886.11 mi (1,426.05 km) |
| Front Royal to Overlea (Maryland) | 94.28 mi (151.73 km) |
| Front Royal to Oviedo (Florida) | 729.98 mi (1,174.79 km) |
| Front Royal to Owasso (Oklahoma) | 981.37 mi (1,579.36 km) |
| Front Royal to Owatonna (Minnesota) | 854.76 mi (1,375.61 km) |
| Front Royal to Owensboro (Kentucky) | 490.59 mi (789.53 km) |
| Front Royal to Owings Mills (Maryland) | 81.79 mi (131.62 km) |
| Front Royal to Owosso (Michigan) | 420.28 mi (676.38 km) |
