| Bull Run to Oswego (Illinois) | 604.29 mi (972.51 km) |
| Bull Run to Oswego (New York) | 327.09 mi (526.40 km) |
| Bull Run to Otsego (Minnesota) | 937.64 mi (1,508.98 km) |
| Bull Run to Ottawa (Illinois) | 623.18 mi (1,002.91 km) |
| Bull Run to Ottawa (Kansas) | 955.47 mi (1,537.68 km) |
| Bull Run to Ottumwa (Iowa) | 803.65 mi (1,293.36 km) |
| Bull Run to Overland (Missouri) | 691.91 mi (1,113.51 km) |
| Bull Run to Overland Park (Kansas) | 922.60 mi (1,484.78 km) |
| Bull Run to Overlea (Maryland) | 67.25 mi (108.22 km) |
| Bull Run to Oviedo (Florida) | 730.25 mi (1,175.22 km) |
| Bull Run to Owasso (Oklahoma) | 1,016.14 mi (1,635.31 km) |
| Bull Run to Owatonna (Minnesota) | 890.80 mi (1,433.61 km) |
| Bull Run to Owensboro (Kentucky) | 525.11 mi (845.08 km) |
| Bull Run to Owings Mills (Maryland) | 58.58 mi (94.27 km) |
| Bull Run to Owosso (Michigan) | 453.27 mi (729.46 km) |
