| Martha Lake to Cehegin | 5,462.30 mi (8,790.73 km) |
| Martha Lake to Cervello | 5,391.64 mi (8,677.00 km) |
| Martha Lake to Cervera | 5,356.05 mi (8,619.73 km) |
| Martha Lake to Ceuti | 5,479.89 mi (8,819.03 km) |
| Martha Lake to Cheste | 5,419.88 mi (8,722.46 km) |
| Martha Lake to Chiclana de la Frontera | 5,410.47 mi (8,707.31 km) |
| Martha Lake to Chipiona | 5,383.56 mi (8,664.00 km) |
| Martha Lake to Chiva | 5,419.25 mi (8,721.44 km) |
| Martha Lake to Churriana de la Vega | 5,454.37 mi (8,777.96 km) |
| Martha Lake to Ciempozuelos | 5,289.54 mi (8,512.70 km) |
| Martha Lake to Cieza | 5,466.25 mi (8,797.07 km) |
| Martha Lake to Cisterniga | 5,175.83 mi (8,329.70 km) |
| Martha Lake to Ciudad de Melilla | 5,581.28 mi (8,982.20 km) |
| Martha Lake to Ciudad Real | 5,344.57 mi (8,601.26 km) |
| Martha Lake to Ciudad-Rodrigo | 5,170.99 mi (8,321.91 km) |
