| Shannon to Castelo Branco | 893.45 mi (1,437.86 km) |
| Shannon to Castro Daire | 817.43 mi (1,315.52 km) |
| Shannon to Celorico de Basto | 783.91 mi (1,261.58 km) |
| Shannon to Chamusca | 923.52 mi (1,486.27 km) |
| Shannon to Chaves | 760.96 mi (1,224.64 km) |
| Shannon to Cinfaes | 803.17 mi (1,292.57 km) |
| Shannon to Coimbra | 864.09 mi (1,390.63 km) |
| Shannon to Condeixa-a-Nova | 870.54 mi (1,401.00 km) |
| Shannon to Corroios | 974.24 mi (1,567.89 km) |
| Shannon to Coruche | 950.64 mi (1,529.91 km) |
| Shannon to Costa de Caparica | 972.24 mi (1,564.67 km) |
| Shannon to Covilha | 861.28 mi (1,386.09 km) |
| Shannon to Eiras | 861.96 mi (1,387.19 km) |
| Shannon to Elvas | 960.24 mi (1,545.35 km) |
| Shannon to Entroncamento | 915.57 mi (1,473.47 km) |
