| Sintra to Portage (Michigan) | 3,872.11 mi (6,231.56 km) |
| Sintra to Portage (Wisconsin) | 4,011.51 mi (6,455.91 km) |
| Sintra to Portales (New Mexico) | 4,981.63 mi (8,017.17 km) |
| Sintra to Porterville (California) | 5,594.02 mi (9,002.70 km) |
| Sintra to Portland (Maine) | 3,109.84 mi (5,004.80 km) |
| Sintra to Portland (Oregon) | 5,293.10 mi (8,518.42 km) |
| Sintra to Portland (Tennessee) | 4,086.66 mi (6,576.84 km) |
| Sintra to Portland (Texas) | 4,937.64 mi (7,946.36 km) |
| Sintra to Portsmouth (New Hampshire) | 3,146.38 mi (5,063.60 km) |
| Sintra to Portsmouth (Ohio) | 3,844.90 mi (6,187.78 km) |
| Sintra to Portsmouth (Virginia) | 3,572.10 mi (5,748.75 km) |
| Sintra to Post Falls (Idaho) | 4,989.31 mi (8,029.52 km) |
| Sintra to Potomac (Maryland) | 3,554.89 mi (5,721.05 km) |
| Sintra to Potomac Park (California) | 5,623.56 mi (9,050.24 km) |
| Sintra to Pottstown (Pennsylvania) | 3,446.51 mi (5,546.62 km) |
