| Senec to Cascais | 1,486.67 mi (2,392.57 km) |
| Senec to Castelo Branco | 1,358.49 mi (2,186.28 km) |
| Senec to Castro Daire | 1,338.02 mi (2,153.34 km) |
| Senec to Celorico de Basto | 1,324.28 mi (2,131.22 km) |
| Senec to Chamusca | 1,419.94 mi (2,285.18 km) |
| Senec to Chaves | 1,288.39 mi (2,073.46 km) |
| Senec to Cinfaes | 1,340.02 mi (2,156.55 km) |
| Senec to Coimbra | 1,385.05 mi (2,229.02 km) |
| Senec to Condeixa-a-Nova | 1,391.69 mi (2,239.71 km) |
| Senec to Corroios | 1,478.33 mi (2,379.14 km) |
| Senec to Coruche | 1,437.24 mi (2,313.02 km) |
| Senec to Costa de Caparica | 1,480.87 mi (2,383.24 km) |
| Senec to Covilha | 1,340.95 mi (2,158.05 km) |
| Senec to Eiras | 1,383.68 mi (2,226.82 km) |
| Senec to Elvas | 1,380.49 mi (2,221.69 km) |
