| Soma to Cocentaina | 1,501.11 mi (2,415.81 km) |
| Soma to Coin | 1,762.77 mi (2,836.90 km) |
| Soma to Colindres | 1,628.52 mi (2,620.84 km) |
| Soma to Collado-Villalba | 1,669.59 mi (2,686.94 km) |
| Soma to Colmenar Viejo | 1,656.76 mi (2,666.29 km) |
| Soma to Colmenarejo | 1,670.65 mi (2,688.66 km) |
| Soma to Conil de la Frontera | 1,841.61 mi (2,963.79 km) |
| Soma to Consuegra | 1,660.08 mi (2,671.63 km) |
| Soma to Corbera de Llobregat | 1,356.74 mi (2,183.46 km) |
| Soma to Cordoba | 1,743.46 mi (2,805.84 km) |
| Soma to Coria del Rio | 1,820.95 mi (2,930.54 km) |
| Soma to Crevillente | 1,527.07 mi (2,457.57 km) |
| Soma to Cuarte de Huerva | 1,503.44 mi (2,419.56 km) |
| Soma to Cubellas | 1,370.70 mi (2,205.92 km) |
| Soma to Cuellar | 1,679.69 mi (2,703.20 km) |
