| Ponte da Barca to Oswego (Illinois) | 3,956.92 mi (6,368.05 km) |
| Ponte da Barca to Oswego (New York) | 3,362.75 mi (5,411.83 km) |
| Ponte da Barca to Otsego (Minnesota) | 4,065.75 mi (6,543.19 km) |
| Ponte da Barca to Ottawa (Illinois) | 3,990.08 mi (6,421.42 km) |
| Ponte da Barca to Ottawa (Kansas) | 4,379.99 mi (7,048.91 km) |
| Ponte da Barca to Ottumwa (Iowa) | 4,162.81 mi (6,699.40 km) |
| Ponte da Barca to Overland (Missouri) | 4,153.97 mi (6,685.16 km) |
| Ponte da Barca to Overland Park (Kansas) | 4,343.12 mi (6,989.57 km) |
| Ponte da Barca to Overlea (Maryland) | 3,480.83 mi (5,601.85 km) |
| Ponte da Barca to Oviedo (Florida) | 4,083.99 mi (6,572.55 km) |
| Ponte da Barca to Owasso (Oklahoma) | 4,495.56 mi (7,234.90 km) |
| Ponte da Barca to Owatonna (Minnesota) | 4,089.75 mi (6,581.82 km) |
| Ponte da Barca to Owensboro (Kentucky) | 4,036.78 mi (6,496.57 km) |
| Ponte da Barca to Owings Mills (Maryland) | 3,492.52 mi (5,620.66 km) |
| Ponte da Barca to Owosso (Michigan) | 3,726.74 mi (5,997.60 km) |
