| Somerset to Cocentaina | 3,820.37 mi (6,148.30 km) |
| Somerset to Coin | 3,676.06 mi (5,916.05 km) |
| Somerset to Colindres | 3,542.38 mi (5,700.92 km) |
| Somerset to Collado-Villalba | 3,592.78 mi (5,782.01 km) |
| Somerset to Colmenar Viejo | 3,603.60 mi (5,799.43 km) |
| Somerset to Colmenarejo | 3,594.45 mi (5,784.71 km) |
| Somerset to Conil de la Frontera | 3,622.54 mi (5,829.92 km) |
| Somerset to Consuegra | 3,646.31 mi (5,868.17 km) |
| Somerset to Corbera de Llobregat | 3,848.80 mi (6,194.05 km) |
| Somerset to Cordoba | 3,636.91 mi (5,853.05 km) |
| Somerset to Coria del Rio | 3,592.82 mi (5,782.09 km) |
| Somerset to Crevillente | 3,818.40 mi (6,145.13 km) |
| Somerset to Cuarte de Huerva | 3,711.18 mi (5,972.57 km) |
| Somerset to Cubellas | 3,843.23 mi (6,185.07 km) |
| Somerset to Cuellar | 3,556.50 mi (5,723.63 km) |
