| Castelo Branco to Kinston (North Carolina) | 3,752.97 mi (6,039.82 km) |
| Castelo Branco to Kirkland (Washington) | 5,187.33 mi (8,348.20 km) |
| Castelo Branco to Kirksville (Missouri) | 4,309.79 mi (6,935.93 km) |
| Castelo Branco to Kirkwood (Missouri) | 4,266.54 mi (6,866.34 km) |
| Castelo Branco to Kiryas Joel (New York) | 3,410.06 mi (5,487.97 km) |
| Castelo Branco to Kissimmee (Florida) | 4,186.79 mi (6,737.99 km) |
| Castelo Branco to Klamath Falls (Oregon) | 5,435.71 mi (8,747.92 km) |
| Castelo Branco to Knightdale (North Carolina) | 3,781.79 mi (6,086.20 km) |
| Castelo Branco to Knik-Fairview (Alaska) | 5,121.48 mi (8,242.22 km) |
| Castelo Branco to Knoxville (Tennessee) | 4,045.42 mi (6,510.48 km) |
| Castelo Branco to Kokomo (Indiana) | 4,003.36 mi (6,442.78 km) |
| Castelo Branco to Kuna (Idaho) | 5,176.21 mi (8,330.30 km) |
| Castelo Branco to Kyle (Texas) | 4,947.17 mi (7,961.69 km) |
| Castelo Branco to La Cañada Flintridge (California) | 5,680.41 mi (9,141.74 km) |
| Castelo Branco to La Crescenta-Montrose (California) | 5,680.80 mi (9,142.36 km) |
