| Ciechanow to Castelo Branco | 1,600.39 mi (2,575.58 km) |
| Ciechanow to Castro Daire | 1,566.54 mi (2,521.11 km) |
| Ciechanow to Celorico de Basto | 1,547.23 mi (2,490.03 km) |
| Ciechanow to Chamusca | 1,660.52 mi (2,672.34 km) |
| Ciechanow to Chaves | 1,510.42 mi (2,430.78 km) |
| Ciechanow to Cinfaes | 1,565.27 mi (2,519.05 km) |
| Ciechanow to Coimbra | 1,617.73 mi (2,603.49 km) |
| Ciechanow to Condeixa-a-Nova | 1,624.89 mi (2,615.01 km) |
| Ciechanow to Corroios | 1,721.64 mi (2,770.72 km) |
| Ciechanow to Coruche | 1,681.11 mi (2,705.48 km) |
| Ciechanow to Costa de Caparica | 1,723.45 mi (2,773.63 km) |
| Ciechanow to Covilha | 1,578.30 mi (2,540.04 km) |
| Ciechanow to Eiras | 1,616.08 mi (2,600.84 km) |
| Ciechanow to Elvas | 1,633.10 mi (2,628.22 km) |
| Ciechanow to Entroncamento | 1,654.42 mi (2,662.53 km) |
