| Sintra to Kaneohe (Hawaii) | 7,801.48 mi (12,555.27 km) |
| Sintra to Kankakee (Illinois) | 4,010.55 mi (6,454.36 km) |
| Sintra to Kannapolis (North Carolina) | 3,828.78 mi (6,161.82 km) |
| Sintra to Kansas City (Kansas) | 4,395.69 mi (7,074.18 km) |
| Sintra to Kansas City (Missouri) | 4,386.84 mi (7,059.93 km) |
| Sintra to Kapaa (Hawaii) | 7,802.29 mi (12,556.57 km) |
| Sintra to Kapolei (Hawaii) | 7,813.48 mi (12,574.57 km) |
| Sintra to Katy (Texas) | 4,789.22 mi (7,707.51 km) |
| Sintra to Kaukauna (Wisconsin) | 3,936.14 mi (6,334.60 km) |
| Sintra to Kaysville (Utah) | 5,080.49 mi (8,176.27 km) |
| Sintra to Kearney (Missouri) | 4,369.90 mi (7,032.67 km) |
| Sintra to Kearney (Nebraska) | 4,538.39 mi (7,303.83 km) |
| Sintra to Kearns (Utah) | 5,099.03 mi (8,206.09 km) |
| Sintra to Kearny (New Jersey) | 3,359.35 mi (5,406.34 km) |
| Sintra to Keene (New Hampshire) | 3,221.90 mi (5,185.14 km) |
