| Heerlen to Castelo Branco | 1,003.42 mi (1,614.85 km) |
| Heerlen to Castro Daire | 958.02 mi (1,541.78 km) |
| Heerlen to Celorico de Basto | 934.66 mi (1,504.19 km) |
| Heerlen to Chamusca | 1,060.38 mi (1,706.52 km) |
| Heerlen to Chaves | 898.12 mi (1,445.38 km) |
| Heerlen to Cinfaes | 954.05 mi (1,535.40 km) |
| Heerlen to Coimbra | 1,011.42 mi (1,627.72 km) |
| Heerlen to Condeixa-a-Nova | 1,018.85 mi (1,639.68 km) |
| Heerlen to Corroios | 1,122.55 mi (1,806.57 km) |
| Heerlen to Coruche | 1,083.69 mi (1,744.03 km) |
| Heerlen to Costa de Caparica | 1,123.59 mi (1,808.24 km) |
| Heerlen to Covilha | 977.49 mi (1,573.12 km) |
| Heerlen to Eiras | 1,009.57 mi (1,624.74 km) |
| Heerlen to Elvas | 1,046.86 mi (1,684.75 km) |
| Heerlen to Entroncamento | 1,053.51 mi (1,695.46 km) |
