| Sammamish to Cernavoda | 5,829.24 mi (9,381.26 km) |
| Sammamish to Chitila | 5,782.92 mi (9,306.71 km) |
| Sammamish to Cisnadie | 5,672.63 mi (9,129.21 km) |
| Sammamish to Cluj-Napoca | 5,594.98 mi (9,004.24 km) |
| Sammamish to Codlea | 5,696.87 mi (9,168.23 km) |
| Sammamish to Comanesti | 5,667.05 mi (9,120.23 km) |
| Sammamish to Comarnic | 5,728.93 mi (9,219.83 km) |
| Sammamish to Constanta | 5,850.34 mi (9,415.21 km) |
| Sammamish to Corabia | 5,803.28 mi (9,339.47 km) |
| Sammamish to Costesti | 5,752.75 mi (9,258.16 km) |
| Sammamish to Covasna | 5,699.99 mi (9,173.25 km) |
| Sammamish to Craiova | 5,754.60 mi (9,261.13 km) |
| Sammamish to Cristuru Secuiesc | 5,651.44 mi (9,095.12 km) |
| Sammamish to Cugir | 5,649.76 mi (9,092.41 km) |
| Sammamish to Cumpana | 5,852.57 mi (9,418.81 km) |
