| Porto Recanati to Oswego (Illinois) | 4,826.43 mi (7,767.38 km) |
| Porto Recanati to Oswego (New York) | 4,275.59 mi (6,880.89 km) |
| Porto Recanati to Otsego (Minnesota) | 4,859.66 mi (7,820.86 km) |
| Porto Recanati to Ottawa (Illinois) | 4,860.38 mi (7,822.02 km) |
| Porto Recanati to Ottawa (Kansas) | 5,239.30 mi (8,431.83 km) |
| Porto Recanati to Ottumwa (Iowa) | 5,014.57 mi (8,070.17 km) |
| Porto Recanati to Overland (Missouri) | 5,043.76 mi (8,117.15 km) |
| Porto Recanati to Overland Park (Kansas) | 5,203.25 mi (8,373.82 km) |
| Porto Recanati to Overlea (Maryland) | 4,440.07 mi (7,145.60 km) |
| Porto Recanati to Oviedo (Florida) | 5,112.18 mi (8,227.26 km) |
| Porto Recanati to Owasso (Oklahoma) | 5,374.60 mi (8,649.59 km) |
| Porto Recanati to Owatonna (Minnesota) | 4,900.57 mi (7,886.71 km) |
| Porto Recanati to Owensboro (Kentucky) | 4,955.77 mi (7,975.55 km) |
| Porto Recanati to Owings Mills (Maryland) | 4,449.92 mi (7,161.45 km) |
| Porto Recanati to Owosso (Michigan) | 4,604.95 mi (7,410.95 km) |
