| Mount Washington to Cividale del Friuli | 4,765.93 mi (7,670.02 km) |
| Mount Washington to Civita Castellana | 4,870.29 mi (7,837.98 km) |
| Mount Washington to Civitanova Marche | 4,886.52 mi (7,864.09 km) |
| Mount Washington to Civitavecchia | 4,852.00 mi (7,808.54 km) |
| Mount Washington to Civitella in Val di Chiana | 4,798.04 mi (7,721.69 km) |
| Mount Washington to Clusone | 4,633.13 mi (7,456.31 km) |
| Mount Washington to Coccaglio | 4,645.92 mi (7,476.88 km) |
| Mount Washington to Codigoro | 4,760.82 mi (7,661.80 km) |
| Mount Washington to Codogno | 4,649.31 mi (7,482.35 km) |
| Mount Washington to Codroipo | 4,752.99 mi (7,649.20 km) |
| Mount Washington to Cogoleto | 4,633.00 mi (7,456.10 km) |
| Mount Washington to Colle di Val d'Elsa | 4,774.19 mi (7,683.32 km) |
| Mount Washington to Colle Salvetti | 4,739.34 mi (7,627.23 km) |
| Mount Washington to Collecchio | 4,685.54 mi (7,540.65 km) |
| Mount Washington to Colleferro | 4,917.96 mi (7,914.69 km) |
