| Sintra to Clarkston (Georgia) | 4,063.33 mi (6,539.30 km) |
| Sintra to Clarksville (Indiana) | 3,995.22 mi (6,429.69 km) |
| Sintra to Clarksville (Tennessee) | 4,127.48 mi (6,642.53 km) |
| Sintra to Clawson (Michigan) | 3,748.59 mi (6,032.77 km) |
| Sintra to Clay (Alabama) | 4,186.41 mi (6,737.38 km) |
| Sintra to Clayton (California) | 5,623.81 mi (9,050.65 km) |
| Sintra to Clayton (Missouri) | 4,204.19 mi (6,765.99 km) |
| Sintra to Clayton (North Carolina) | 3,712.49 mi (5,974.67 km) |
| Sintra to Clayton (Ohio) | 3,879.32 mi (6,243.16 km) |
| Sintra to Clearfield (Utah) | 5,080.61 mi (8,176.45 km) |
| Sintra to Clearlake (California) | 5,603.08 mi (9,017.28 km) |
| Sintra to Clearwater (Florida) | 4,187.11 mi (6,738.51 km) |
| Sintra to Cleburne (Texas) | 4,768.94 mi (7,674.86 km) |
| Sintra to Clemmons (North Carolina) | 3,799.07 mi (6,114.01 km) |
| Sintra to Clemson (South Carolina) | 3,963.05 mi (6,377.92 km) |
