| Holt to Cascais | 3,812.44 mi (6,135.53 km) |
| Holt to Castelo Branco | 3,862.63 mi (6,216.30 km) |
| Holt to Castro Daire | 3,805.79 mi (6,124.82 km) |
| Holt to Celorico de Basto | 3,786.53 mi (6,093.83 km) |
| Holt to Chamusca | 3,833.40 mi (6,169.27 km) |
| Holt to Chaves | 3,798.52 mi (6,113.13 km) |
| Holt to Cinfaes | 3,789.95 mi (6,099.33 km) |
| Holt to Coimbra | 3,806.42 mi (6,125.84 km) |
| Holt to Condeixa-a-Nova | 3,806.37 mi (6,125.76 km) |
| Holt to Corroios | 3,827.81 mi (6,160.27 km) |
| Holt to Coruche | 3,844.99 mi (6,187.91 km) |
| Holt to Costa de Caparica | 3,822.82 mi (6,152.23 km) |
| Holt to Covilha | 3,846.55 mi (6,190.43 km) |
| Holt to Eiras | 3,805.60 mi (6,124.53 km) |
| Holt to Elvas | 3,911.96 mi (6,295.69 km) |
