| Lockport to Oswego (Illinois) | 17.14 mi (27.59 km) |
| Lockport to Oswego (New York) | 600.47 mi (966.37 km) |
| Lockport to Otsego (Minnesota) | 378.23 mi (608.71 km) |
| Lockport to Ottawa (Illinois) | 44.33 mi (71.35 km) |
| Lockport to Ottawa (Kansas) | 434.43 mi (699.14 km) |
| Lockport to Ottumwa (Iowa) | 231.18 mi (372.05 km) |
| Lockport to Overland (Missouri) | 235.03 mi (378.25 km) |
| Lockport to Overland Park (Kansas) | 397.58 mi (639.84 km) |
| Lockport to Overlea (Maryland) | 623.74 mi (1,003.81 km) |
| Lockport to Oviedo (Florida) | 972.78 mi (1,565.54 km) |
| Lockport to Owasso (Oklahoma) | 556.38 mi (895.41 km) |
| Lockport to Owatonna (Minnesota) | 315.03 mi (506.99 km) |
| Lockport to Owensboro (Kentucky) | 269.24 mi (433.30 km) |
| Lockport to Owings Mills (Maryland) | 608.82 mi (979.80 km) |
| Lockport to Owosso (Michigan) | 219.53 mi (353.30 km) |
