| Harrow Weald to Cascais | 993.49 mi (1,598.86 km) |
| Harrow Weald to Castelo Branco | 883.64 mi (1,422.08 km) |
| Harrow Weald to Castro Daire | 822.73 mi (1,324.05 km) |
| Harrow Weald to Celorico de Basto | 793.63 mi (1,277.23 km) |
| Harrow Weald to Chamusca | 932.72 mi (1,501.07 km) |
| Harrow Weald to Chaves | 759.91 mi (1,222.96 km) |
| Harrow Weald to Cinfaes | 814.32 mi (1,310.52 km) |
| Harrow Weald to Coimbra | 876.75 mi (1,411.00 km) |
| Harrow Weald to Condeixa-a-Nova | 884.22 mi (1,423.02 km) |
| Harrow Weald to Corroios | 993.34 mi (1,598.62 km) |
| Harrow Weald to Coruche | 958.79 mi (1,543.03 km) |
| Harrow Weald to Costa de Caparica | 993.19 mi (1,598.39 km) |
| Harrow Weald to Covilha | 853.51 mi (1,373.59 km) |
| Harrow Weald to Eiras | 874.68 mi (1,407.66 km) |
| Harrow Weald to Elvas | 939.38 mi (1,511.78 km) |
