| Thornbury to Benavente | 924.40 mi (1,487.67 km) |
| Thornbury to Bombarral | 910.35 mi (1,465.06 km) |
| Thornbury to Bougado | 764.98 mi (1,231.12 km) |
| Thornbury to Braga | 748.67 mi (1,204.87 km) |
| Thornbury to Braganca | 706.07 mi (1,136.31 km) |
| Thornbury to Cabeceiras de Basto | 742.92 mi (1,195.62 km) |
| Thornbury to Cacem | 945.57 mi (1,521.76 km) |
| Thornbury to Cadaval | 911.70 mi (1,467.24 km) |
| Thornbury to Caldas da Rainha | 900.90 mi (1,449.85 km) |
| Thornbury to Calheta | 1,498.46 mi (2,411.53 km) |
| Thornbury to Camara de Lobos | 1,495.76 mi (2,407.19 km) |
| Thornbury to Canico | 1,496.04 mi (2,407.65 km) |
| Thornbury to Cantanhede | 830.27 mi (1,336.18 km) |
| Thornbury to Carregal do Sal | 815.07 mi (1,311.72 km) |
| Thornbury to Cartaxo | 912.03 mi (1,467.77 km) |
