| Heerlen to Cartagena | 979.32 mi (1,576.07 km) |
| Heerlen to Cartama | 1,110.50 mi (1,787.18 km) |
| Heerlen to Cartaya | 1,139.88 mi (1,834.46 km) |
| Heerlen to Caspe | 725.88 mi (1,168.19 km) |
| Heerlen to Cassa de la Selva | 638.69 mi (1,027.88 km) |
| Heerlen to Castalla | 908.65 mi (1,462.32 km) |
| Heerlen to Castellbisbal | 677.27 mi (1,089.96 km) |
| Heerlen to Castelldefels | 690.48 mi (1,111.22 km) |
| Heerlen to Castello de Ampurias | 611.61 mi (984.29 km) |
| Heerlen to Castellon de la Plana | 806.97 mi (1,298.70 km) |
| Heerlen to Castilleja de la Cuesta | 1,104.16 mi (1,776.97 km) |
| Heerlen to Catarroja | 851.32 mi (1,370.07 km) |
| Heerlen to Catral | 939.60 mi (1,512.14 km) |
| Heerlen to Caudete | 907.26 mi (1,460.09 km) |
| Heerlen to Cehegin | 962.12 mi (1,548.38 km) |
