| Boston to Cehegin | 1,031.72 mi (1,660.39 km) |
| Boston to Cervello | 805.25 mi (1,295.93 km) |
| Boston to Cervera | 783.63 mi (1,261.14 km) |
| Boston to Ceuti | 1,030.89 mi (1,659.06 km) |
| Boston to Cheste | 932.89 mi (1,501.35 km) |
| Boston to Chiclana de la Frontera | 1,181.86 mi (1,902.02 km) |
| Boston to Chipiona | 1,164.09 mi (1,873.42 km) |
| Boston to Chiva | 933.52 mi (1,502.36 km) |
| Boston to Churriana de la Vega | 1,107.22 mi (1,781.89 km) |
| Boston to Ciempozuelos | 901.45 mi (1,450.75 km) |
| Boston to Cieza | 1,020.26 mi (1,641.96 km) |
| Boston to Cisterniga | 814.11 mi (1,310.18 km) |
| Boston to Ciudad de Melilla | 1,230.69 mi (1,980.60 km) |
| Boston to Ciudad Real | 984.21 mi (1,583.94 km) |
| Boston to Ciudad-Rodrigo | 908.14 mi (1,461.51 km) |
