| Sammamish to Cividale del Friuli | 5,426.22 mi (8,732.66 km) |
| Sammamish to Civita Castellana | 5,631.59 mi (9,063.17 km) |
| Sammamish to Civitanova Marche | 5,603.09 mi (9,017.30 km) |
| Sammamish to Civitavecchia | 5,628.13 mi (9,057.60 km) |
| Sammamish to Civitella in Val di Chiana | 5,546.89 mi (8,926.86 km) |
| Sammamish to Clusone | 5,355.94 mi (8,619.55 km) |
| Sammamish to Coccaglio | 5,375.62 mi (8,651.22 km) |
| Sammamish to Codigoro | 5,471.54 mi (8,805.59 km) |
| Sammamish to Codogno | 5,392.72 mi (8,678.74 km) |
| Sammamish to Codroipo | 5,423.98 mi (8,729.05 km) |
| Sammamish to Cogoleto | 5,411.34 mi (8,708.72 km) |
| Sammamish to Colle di Val d'Elsa | 5,533.35 mi (8,905.07 km) |
| Sammamish to Colle Salvetti | 5,505.04 mi (8,859.51 km) |
| Sammamish to Collecchio | 5,429.86 mi (8,738.51 km) |
| Sammamish to Colleferro | 5,680.69 mi (9,142.18 km) |
