| Swindon to Cascais | 962.09 mi (1,548.34 km) |
| Swindon to Castelo Branco | 856.40 mi (1,378.24 km) |
| Swindon to Castro Daire | 792.38 mi (1,275.22 km) |
| Swindon to Celorico de Basto | 762.21 mi (1,226.67 km) |
| Swindon to Chamusca | 903.08 mi (1,453.37 km) |
| Swindon to Chaves | 729.63 mi (1,174.22 km) |
| Swindon to Cinfaes | 782.97 mi (1,260.07 km) |
| Swindon to Coimbra | 845.97 mi (1,361.46 km) |
| Swindon to Condeixa-a-Nova | 853.38 mi (1,373.38 km) |
| Swindon to Corroios | 962.80 mi (1,549.48 km) |
| Swindon to Coruche | 929.58 mi (1,496.02 km) |
| Swindon to Costa de Caparica | 962.38 mi (1,548.80 km) |
| Swindon to Covilha | 825.59 mi (1,328.65 km) |
| Swindon to Eiras | 843.87 mi (1,358.07 km) |
| Swindon to Elvas | 914.51 mi (1,471.76 km) |
