| Sintra to Cookeville (Tennessee) | 4,051.00 mi (6,519.45 km) |
| Sintra to Coolidge (Arizona) | 5,408.50 mi (8,704.14 km) |
| Sintra to Coon Rapids (Minnesota) | 4,133.69 mi (6,652.53 km) |
| Sintra to Cooper City (Florida) | 4,126.02 mi (6,640.19 km) |
| Sintra to Coos Bay (Oregon) | 5,452.13 mi (8,774.35 km) |
| Sintra to Copiague (New York) | 3,325.44 mi (5,351.78 km) |
| Sintra to Coppell (Texas) | 4,725.26 mi (7,604.57 km) |
| Sintra to Copperas Cove (Texas) | 4,840.82 mi (7,790.55 km) |
| Sintra to Coral Gables (Florida) | 4,137.64 mi (6,658.88 km) |
| Sintra to Coral Springs (Florida) | 4,116.52 mi (6,624.90 km) |
| Sintra to Coral Terrace (Florida) | 4,137.86 mi (6,659.24 km) |
| Sintra to Coralville (Iowa) | 4,165.19 mi (6,703.22 km) |
| Sintra to Coram (New York) | 3,301.51 mi (5,313.27 km) |
| Sintra to Corcoran (California) | 5,614.95 mi (9,036.38 km) |
| Sintra to Cordele (Georgia) | 4,101.26 mi (6,600.34 km) |
