| Amposta to Oswego (Illinois) | 4,395.21 mi (7,073.40 km) |
| Amposta to Oswego (New York) | 3,809.69 mi (6,131.10 km) |
| Amposta to Otsego (Minnesota) | 4,483.90 mi (7,216.14 km) |
| Amposta to Ottawa (Illinois) | 4,428.70 mi (7,127.30 km) |
| Amposta to Ottawa (Kansas) | 4,817.25 mi (7,752.62 km) |
| Amposta to Ottumwa (Iowa) | 4,597.29 mi (7,398.63 km) |
| Amposta to Overland (Missouri) | 4,598.06 mi (7,399.86 km) |
| Amposta to Overland Park (Kansas) | 4,780.46 mi (7,693.40 km) |
| Amposta to Overlea (Maryland) | 3,938.82 mi (6,338.92 km) |
| Amposta to Oviedo (Florida) | 4,554.51 mi (7,329.78 km) |
| Amposta to Owasso (Oklahoma) | 4,938.15 mi (7,947.19 km) |
| Amposta to Owatonna (Minnesota) | 4,512.81 mi (7,262.66 km) |
| Amposta to Owensboro (Kentucky) | 4,487.43 mi (7,221.82 km) |
| Amposta to Owings Mills (Maryland) | 3,950.15 mi (6,357.15 km) |
| Amposta to Owosso (Michigan) | 4,166.35 mi (6,705.10 km) |
