| Ponte da Barca to Odessa (Texas) | 4,976.21 mi (8,008.43 km) |
| Ponte da Barca to Ogden (Utah) | 4,979.34 mi (8,013.47 km) |
| Ponte da Barca to Oildale (California) | 5,531.97 mi (8,902.84 km) |
| Ponte da Barca to Ojus (Florida) | 4,137.79 mi (6,659.14 km) |
| Ponte da Barca to Okemos (Michigan) | 3,746.50 mi (6,029.41 km) |
| Ponte da Barca to Oklahoma City (Oklahoma) | 4,605.18 mi (7,411.33 km) |
| Ponte da Barca to Okmulgee (Oklahoma) | 4,530.31 mi (7,290.82 km) |
| Ponte da Barca to Olathe (Kansas) | 4,349.23 mi (6,999.42 km) |
| Ponte da Barca to Old Jamestown (Missouri) | 4,144.93 mi (6,670.63 km) |
| Ponte da Barca to Oldsmar (Florida) | 4,182.14 mi (6,730.50 km) |
| Ponte da Barca to Olean (New York) | 3,490.64 mi (5,617.65 km) |
| Ponte da Barca to Olive Branch (Mississippi) | 4,268.06 mi (6,868.77 km) |
| Ponte da Barca to Olivehurst (California) | 5,450.47 mi (8,771.68 km) |
| Ponte da Barca to Olney (Maryland) | 3,514.07 mi (5,655.34 km) |
| Ponte da Barca to Olympia (Washington) | 5,106.06 mi (8,217.41 km) |
