| Harlingen to Coin | 1,241.57 mi (1,998.12 km) |
| Harlingen to Colindres | 787.86 mi (1,267.94 km) |
| Harlingen to Collado-Villalba | 972.31 mi (1,564.77 km) |
| Harlingen to Colmenar Viejo | 965.60 mi (1,553.98 km) |
| Harlingen to Colmenarejo | 977.07 mi (1,572.44 km) |
| Harlingen to Conil de la Frontera | 1,293.91 mi (2,082.35 km) |
| Harlingen to Consuegra | 1,038.92 mi (1,671.98 km) |
| Harlingen to Corbera de Llobregat | 828.40 mi (1,333.18 km) |
| Harlingen to Cordoba | 1,163.48 mi (1,872.44 km) |
| Harlingen to Coria del Rio | 1,228.28 mi (1,976.72 km) |
| Harlingen to Crevillente | 1,073.20 mi (1,727.14 km) |
| Harlingen to Cuarte de Huerva | 853.22 mi (1,373.12 km) |
| Harlingen to Cubellas | 844.88 mi (1,359.70 km) |
| Harlingen to Cuellar | 930.84 mi (1,498.05 km) |
| Harlingen to Cuenca | 973.06 mi (1,565.98 km) |
