| Brock Hall to Oswego (Illinois) | 640.83 mi (1,031.32 km) |
| Brock Hall to Oswego (New York) | 317.48 mi (510.93 km) |
| Brock Hall to Otsego (Minnesota) | 969.52 mi (1,560.28 km) |
| Brock Hall to Ottawa (Illinois) | 660.62 mi (1,063.16 km) |
| Brock Hall to Ottawa (Kansas) | 996.55 mi (1,603.80 km) |
| Brock Hall to Ottumwa (Iowa) | 842.35 mi (1,355.64 km) |
| Brock Hall to Overland (Missouri) | 733.19 mi (1,179.95 km) |
| Brock Hall to Overland Park (Kansas) | 963.52 mi (1,550.63 km) |
| Brock Hall to Overlea (Maryland) | 36.90 mi (59.38 km) |
| Brock Hall to Oviedo (Florida) | 749.39 mi (1,206.02 km) |
| Brock Hall to Owasso (Oklahoma) | 1,058.11 mi (1,702.86 km) |
| Brock Hall to Owatonna (Minnesota) | 924.66 mi (1,488.10 km) |
| Brock Hall to Owensboro (Kentucky) | 567.11 mi (912.68 km) |
| Brock Hall to Owings Mills (Maryland) | 38.15 mi (61.40 km) |
| Brock Hall to Owosso (Michigan) | 481.42 mi (774.77 km) |
