| Rocca Priora to Oswego (Illinois) | 4,862.46 mi (7,825.37 km) |
| Rocca Priora to Oswego (New York) | 4,303.02 mi (6,925.04 km) |
| Rocca Priora to Otsego (Minnesota) | 4,906.84 mi (7,896.80 km) |
| Rocca Priora to Ottawa (Illinois) | 4,896.38 mi (7,879.96 km) |
| Rocca Priora to Ottawa (Kansas) | 5,278.00 mi (8,494.12 km) |
| Rocca Priora to Ottumwa (Iowa) | 5,053.85 mi (8,133.39 km) |
| Rocca Priora to Overland (Missouri) | 5,077.10 mi (8,170.80 km) |
| Rocca Priora to Overland Park (Kansas) | 5,241.73 mi (8,435.75 km) |
| Rocca Priora to Overlea (Maryland) | 4,459.59 mi (7,177.01 km) |
| Rocca Priora to Oviedo (Florida) | 5,117.86 mi (8,236.40 km) |
| Rocca Priora to Owasso (Oklahoma) | 5,410.50 mi (8,707.36 km) |
| Rocca Priora to Owatonna (Minnesota) | 4,945.53 mi (7,959.06 km) |
| Rocca Priora to Owensboro (Kentucky) | 4,983.93 mi (8,020.86 km) |
| Rocca Priora to Owings Mills (Maryland) | 4,469.81 mi (7,193.46 km) |
| Rocca Priora to Owosso (Michigan) | 4,639.00 mi (7,465.75 km) |
