| Mercer Island to Castrovillari | 5,882.08 mi (9,466.30 km) |
| Mercer Island to Catania | 5,997.57 mi (9,652.15 km) |
| Mercer Island to Catanzaro | 5,948.29 mi (9,572.85 km) |
| Mercer Island to Cattolica | 5,545.35 mi (8,924.37 km) |
| Mercer Island to Cava de' Tirreni | 5,791.69 mi (9,320.82 km) |
| Mercer Island to Cavallino | 5,897.63 mi (9,491.32 km) |
| Mercer Island to Cavarzere | 5,459.12 mi (8,785.60 km) |
| Mercer Island to Cave | 5,680.37 mi (9,141.67 km) |
| Mercer Island to Cavriago | 5,447.54 mi (8,766.96 km) |
| Mercer Island to Cavriglia | 5,541.90 mi (8,918.83 km) |
| Mercer Island to Cazzago San Martino | 5,382.50 mi (8,662.29 km) |
| Mercer Island to Ceccano | 5,705.41 mi (9,181.96 km) |
| Mercer Island to Cecina | 5,529.67 mi (8,899.15 km) |
| Mercer Island to Cefalu | 5,937.76 mi (9,555.90 km) |
| Mercer Island to Ceglie Messapico | 5,860.90 mi (9,432.21 km) |
