| Mount Washington to Cadillac (Michigan) | 428.87 mi (690.21 km) |
| Mount Washington to Caguas (Puerto Rico) | 1,805.03 mi (2,904.91 km) |
| Mount Washington to Cahokia (Illinois) | 253.28 mi (407.61 km) |
| Mount Washington to Calabasas (California) | 1,858.51 mi (2,990.98 km) |
| Mount Washington to Caldwell (Idaho) | 1,660.73 mi (2,672.69 km) |
| Mount Washington to Caledonia (Wisconsin) | 350.49 mi (564.06 km) |
| Mount Washington to Calera (Alabama) | 346.28 mi (557.28 km) |
| Mount Washington to Calexico (California) | 1,719.17 mi (2,766.74 km) |
| Mount Washington to Calhoun (Georgia) | 247.81 mi (398.81 km) |
| Mount Washington to California (Maryland) | 492.26 mi (792.22 km) |
| Mount Washington to California City (California) | 1,794.58 mi (2,888.10 km) |
| Mount Washington to Callaway (Florida) | 546.40 mi (879.34 km) |
| Mount Washington to Calumet City (Illinois) | 268.43 mi (432.00 km) |
| Mount Washington to Calverton (Maryland) | 470.11 mi (756.57 km) |
| Mount Washington to Camano (Washington) | 1,966.77 mi (3,165.21 km) |
