| Littleport to Oswego (Illinois) | 3,969.24 mi (6,387.87 km) |
| Littleport to Oswego (New York) | 3,436.57 mi (5,530.62 km) |
| Littleport to Otsego (Minnesota) | 3,988.79 mi (6,419.33 km) |
| Littleport to Ottawa (Illinois) | 4,003.17 mi (6,442.48 km) |
| Littleport to Ottawa (Kansas) | 4,377.42 mi (7,044.78 km) |
| Littleport to Ottumwa (Iowa) | 4,152.24 mi (6,682.39 km) |
| Littleport to Overland (Missouri) | 4,190.60 mi (6,744.11 km) |
| Littleport to Overland Park (Kansas) | 4,341.73 mi (6,987.34 km) |
| Littleport to Overlea (Maryland) | 3,619.75 mi (5,825.42 km) |
| Littleport to Oviedo (Florida) | 4,328.95 mi (6,966.77 km) |
| Littleport to Owasso (Oklahoma) | 4,516.58 mi (7,268.73 km) |
| Littleport to Owatonna (Minnesota) | 4,031.70 mi (6,488.40 km) |
| Littleport to Owensboro (Kentucky) | 4,112.71 mi (6,618.77 km) |
| Littleport to Owings Mills (Maryland) | 3,628.53 mi (5,839.55 km) |
| Littleport to Owosso (Michigan) | 3,751.60 mi (6,037.62 km) |
