| Thornbury to Cascais | 952.02 mi (1,532.13 km) |
| Thornbury to Castelo Branco | 848.90 mi (1,366.18 km) |
| Thornbury to Castro Daire | 783.22 mi (1,260.46 km) |
| Thornbury to Celorico de Basto | 752.48 mi (1,211.00 km) |
| Thornbury to Chamusca | 894.12 mi (1,438.95 km) |
| Thornbury to Chaves | 720.64 mi (1,159.76 km) |
| Thornbury to Cinfaes | 773.24 mi (1,244.41 km) |
| Thornbury to Coimbra | 836.45 mi (1,346.13 km) |
| Thornbury to Condeixa-a-Nova | 843.80 mi (1,357.96 km) |
| Thornbury to Corroios | 953.23 mi (1,534.08 km) |
| Thornbury to Coruche | 920.83 mi (1,481.93 km) |
| Thornbury to Costa de Caparica | 952.65 mi (1,533.13 km) |
| Thornbury to Covilha | 817.75 mi (1,316.05 km) |
| Thornbury to Eiras | 834.32 mi (1,342.71 km) |
| Thornbury to Elvas | 908.26 mi (1,461.71 km) |
