| Sintra to Allouez (Wisconsin) | 3,919.91 mi (6,308.48 km) |
| Sintra to Aloha (Oregon) | 5,303.13 mi (8,534.56 km) |
| Sintra to Alpena (Michigan) | 3,696.29 mi (5,948.61 km) |
| Sintra to Alpharetta (Georgia) | 4,056.53 mi (6,528.36 km) |
| Sintra to Alpine (California) | 5,644.92 mi (9,084.62 km) |
| Sintra to Alpine (Utah) | 5,097.13 mi (8,203.04 km) |
| Sintra to Alsip (Illinois) | 3,987.60 mi (6,417.42 km) |
| Sintra to Altadena (California) | 5,642.51 mi (9,080.75 km) |
| Sintra to Altamont (Oregon) | 5,415.39 mi (8,715.23 km) |
| Sintra to Altamonte Springs (Florida) | 4,091.55 mi (6,584.71 km) |
| Sintra to Alton (Illinois) | 4,187.28 mi (6,738.77 km) |
| Sintra to Alton (Texas) | 5,050.88 mi (8,128.61 km) |
| Sintra to Altoona (Iowa) | 4,252.79 mi (6,844.21 km) |
| Sintra to Altoona (Pennsylvania) | 3,574.85 mi (5,753.17 km) |
| Sintra to Altus (Oklahoma) | 4,772.24 mi (7,680.18 km) |
