| Shannon to Bombarral | 929.10 mi (1,495.24 km) |
| Shannon to Bougado | 786.19 mi (1,265.25 km) |
| Shannon to Braga | 771.60 mi (1,241.77 km) |
| Shannon to Braganca | 759.98 mi (1,223.07 km) |
| Shannon to Cabeceiras de Basto | 773.51 mi (1,244.85 km) |
| Shannon to Cacem | 963.62 mi (1,550.79 km) |
| Shannon to Cadaval | 931.47 mi (1,499.06 km) |
| Shannon to Caldas da Rainha | 919.48 mi (1,479.76 km) |
| Shannon to Calheta | 1,441.54 mi (2,319.94 km) |
| Shannon to Camara de Lobos | 1,440.94 mi (2,318.96 km) |
| Shannon to Canico | 1,442.80 mi (2,321.96 km) |
| Shannon to Cantanhede | 854.61 mi (1,375.36 km) |
| Shannon to Carregal do Sal | 849.48 mi (1,367.10 km) |
| Shannon to Cartaxo | 937.17 mi (1,508.23 km) |
| Shannon to Cascais | 968.61 mi (1,558.82 km) |
