| Diekirch to Castelo Branco | 961.41 mi (1,547.25 km) |
| Diekirch to Castro Daire | 919.99 mi (1,480.57 km) |
| Diekirch to Celorico de Basto | 898.25 mi (1,445.59 km) |
| Diekirch to Chamusca | 1,019.61 mi (1,640.90 km) |
| Diekirch to Chaves | 861.48 mi (1,386.42 km) |
| Diekirch to Cinfaes | 917.11 mi (1,475.95 km) |
| Diekirch to Coimbra | 972.69 mi (1,565.39 km) |
| Diekirch to Condeixa-a-Nova | 980.04 mi (1,577.23 km) |
| Diekirch to Corroios | 1,081.62 mi (1,740.70 km) |
| Diekirch to Coruche | 1,042.10 mi (1,677.09 km) |
| Diekirch to Costa de Caparica | 1,082.91 mi (1,742.77 km) |
| Diekirch to Covilha | 936.67 mi (1,507.42 km) |
| Diekirch to Eiras | 970.91 mi (1,562.53 km) |
| Diekirch to Elvas | 1,001.83 mi (1,612.30 km) |
| Diekirch to Entroncamento | 1,012.97 mi (1,630.22 km) |
