| Harrow to Cascais | 992.11 mi (1,596.64 km) |
| Harrow to Castelo Branco | 882.23 mi (1,419.82 km) |
| Harrow to Castro Daire | 821.34 mi (1,321.82 km) |
| Harrow to Celorico de Basto | 792.25 mi (1,275.01 km) |
| Harrow to Chamusca | 931.32 mi (1,498.82 km) |
| Harrow to Chaves | 758.52 mi (1,220.73 km) |
| Harrow to Cinfaes | 812.94 mi (1,308.30 km) |
| Harrow to Coimbra | 875.37 mi (1,408.77 km) |
| Harrow to Condeixa-a-Nova | 882.84 mi (1,420.79 km) |
| Harrow to Corroios | 991.95 mi (1,596.39 km) |
| Harrow to Coruche | 957.39 mi (1,540.78 km) |
| Harrow to Costa de Caparica | 991.81 mi (1,596.16 km) |
| Harrow to Covilha | 852.11 mi (1,371.33 km) |
| Harrow to Eiras | 873.29 mi (1,405.43 km) |
| Harrow to Elvas | 937.95 mi (1,509.49 km) |
