| Seini to Cascais | 1,745.31 mi (2,808.81 km) |
| Seini to Castelo Branco | 1,617.72 mi (2,603.47 km) |
| Seini to Castro Daire | 1,601.59 mi (2,577.51 km) |
| Seini to Celorico de Basto | 1,589.41 mi (2,557.91 km) |
| Seini to Chamusca | 1,679.20 mi (2,702.41 km) |
| Seini to Chaves | 1,553.97 mi (2,500.87 km) |
| Seini to Cinfaes | 1,604.46 mi (2,582.13 km) |
| Seini to Coimbra | 1,647.10 mi (2,650.76 km) |
| Seini to Condeixa-a-Nova | 1,653.54 mi (2,661.12 km) |
| Seini to Corroios | 1,736.21 mi (2,794.17 km) |
| Seini to Coruche | 1,695.20 mi (2,728.17 km) |
| Seini to Costa de Caparica | 1,739.01 mi (2,798.67 km) |
| Seini to Covilha | 1,601.84 mi (2,577.91 km) |
| Seini to Eiras | 1,645.83 mi (2,648.70 km) |
| Seini to Elvas | 1,635.48 mi (2,632.05 km) |
