| Sintra to Kenosha (Wisconsin) | 3,967.12 mi (6,384.47 km) |
| Sintra to Kent (Ohio) | 3,700.92 mi (5,956.06 km) |
| Sintra to Kent (Washington) | 5,191.60 mi (8,355.07 km) |
| Sintra to Kentwood (Michigan) | 3,852.99 mi (6,200.79 km) |
| Sintra to Kerman (California) | 5,605.72 mi (9,021.54 km) |
| Sintra to Kernersville (North Carolina) | 3,781.65 mi (6,085.97 km) |
| Sintra to Kerrville (Texas) | 4,942.73 mi (7,954.56 km) |
| Sintra to Kettering (Maryland) | 3,538.12 mi (5,694.06 km) |
| Sintra to Kettering (Ohio) | 3,875.73 mi (6,237.39 km) |
| Sintra to Kewanee (Illinois) | 4,102.50 mi (6,602.34 km) |
| Sintra to Key Biscayne (Florida) | 4,132.47 mi (6,650.58 km) |
| Sintra to Key Largo (Florida) | 4,166.25 mi (6,704.94 km) |
| Sintra to Key West (Florida) | 4,259.25 mi (6,854.61 km) |
| Sintra to Keystone (Florida) | 4,173.21 mi (6,716.14 km) |
| Sintra to Kihei (Hawaii) | 7,801.82 mi (12,555.81 km) |
