| Sintra to Carlsbad (New Mexico) | 5,094.45 mi (8,198.73 km) |
| Sintra to Carmel (Indiana) | 3,963.46 mi (6,378.58 km) |
| Sintra to Carmichael (California) | 5,567.26 mi (8,959.65 km) |
| Sintra to Carney (Maryland) | 3,511.40 mi (5,651.05 km) |
| Sintra to Carnot-Moon (Pennsylvania) | 3,662.79 mi (5,894.68 km) |
| Sintra to Carol Stream (Illinois) | 3,998.55 mi (6,435.04 km) |
| Sintra to Carolina (Puerto Rico) | 3,646.10 mi (5,867.83 km) |
| Sintra to Carolina Forest (South Carolina) | 3,793.79 mi (6,105.52 km) |
| Sintra to Carpentersville (Illinois) | 3,999.83 mi (6,437.10 km) |
| Sintra to Carpinteria (California) | 5,691.43 mi (9,159.47 km) |
| Sintra to Carrboro (North Carolina) | 3,736.83 mi (6,013.84 km) |
| Sintra to Carroll (Iowa) | 4,301.71 mi (6,922.93 km) |
| Sintra to Carrollton (Georgia) | 4,113.51 mi (6,620.05 km) |
| Sintra to Carrollton (Texas) | 4,719.92 mi (7,595.98 km) |
| Sintra to Carrollwood (Florida) | 4,171.37 mi (6,713.17 km) |
