| Mount Washington to Cadiz | 4,214.68 mi (6,782.87 km) |
| Mount Washington to Calafell | 4,433.95 mi (7,135.75 km) |
| Mount Washington to Calahorra | 4,237.36 mi (6,819.37 km) |
| Mount Washington to Calasparra | 4,381.33 mi (7,051.07 km) |
| Mount Washington to Calatayud | 4,282.62 mi (6,892.21 km) |
| Mount Washington to Caldas de Montbuy | 4,446.47 mi (7,155.90 km) |
| Mount Washington to Caldas de Reyes | 3,920.68 mi (6,309.73 km) |
| Mount Washington to Calella | 4,469.37 mi (7,192.76 km) |
| Mount Washington to Callosa de Segura | 4,423.90 mi (7,119.57 km) |
| Mount Washington to Calpe | 4,449.80 mi (7,161.26 km) |
| Mount Washington to Calvia | 4,532.65 mi (7,294.60 km) |
| Mount Washington to Camas | 4,199.83 mi (6,758.97 km) |
| Mount Washington to Cambados | 3,915.96 mi (6,302.13 km) |
| Mount Washington to Cambre | 3,916.25 mi (6,302.59 km) |
| Mount Washington to Cambrils | 4,415.07 mi (7,105.37 km) |
