| Sammamish to Cortona | 5,562.10 mi (8,951.33 km) |
| Sammamish to Cosenza | 5,908.50 mi (9,508.81 km) |
| Sammamish to Cossato | 5,329.81 mi (8,577.51 km) |
| Sammamish to Costa Volpino | 5,362.74 mi (8,630.50 km) |
| Sammamish to Creazzo | 5,414.24 mi (8,713.38 km) |
| Sammamish to Crema | 5,379.93 mi (8,658.16 km) |
| Sammamish to Cremona | 5,402.51 mi (8,694.49 km) |
| Sammamish to Crevalcore | 5,454.98 mi (8,778.94 km) |
| Sammamish to Crispiano | 5,851.33 mi (9,416.80 km) |
| Sammamish to Crosia | 5,904.37 mi (9,502.16 km) |
| Sammamish to Crotone | 5,942.60 mi (9,563.69 km) |
| Sammamish to Cuneo | 5,383.19 mi (8,663.41 km) |
| Sammamish to Cuorgne | 5,326.90 mi (8,572.82 km) |
| Sammamish to Cusano Milanino | 5,356.56 mi (8,620.55 km) |
| Sammamish to Cutro | 5,942.54 mi (9,563.60 km) |
