| Castelo Branco to Clarkston (Georgia) | 4,133.24 mi (6,651.80 km) |
| Castelo Branco to Clarksville (Indiana) | 4,055.43 mi (6,526.58 km) |
| Castelo Branco to Clarksville (Tennessee) | 4,189.75 mi (6,742.75 km) |
| Castelo Branco to Clawson (Michigan) | 3,802.08 mi (6,118.85 km) |
| Castelo Branco to Clay (Alabama) | 4,254.53 mi (6,847.00 km) |
| Castelo Branco to Clayton (California) | 5,649.66 mi (9,092.25 km) |
| Castelo Branco to Clayton (Missouri) | 4,260.07 mi (6,855.92 km) |
| Castelo Branco to Clayton (North Carolina) | 3,783.63 mi (6,089.16 km) |
| Castelo Branco to Clayton (Ohio) | 3,937.55 mi (6,336.88 km) |
| Castelo Branco to Clearfield (Utah) | 5,112.17 mi (8,227.24 km) |
| Castelo Branco to Clearlake (California) | 5,626.56 mi (9,055.07 km) |
| Castelo Branco to Clearwater (Florida) | 4,268.07 mi (6,868.80 km) |
| Castelo Branco to Cleburne (Texas) | 4,829.61 mi (7,772.51 km) |
| Castelo Branco to Clemmons (North Carolina) | 3,867.97 mi (6,224.90 km) |
| Castelo Branco to Clemson (South Carolina) | 4,032.55 mi (6,489.77 km) |
