| Cayce to Cascais | 3,897.69 mi (6,272.72 km) |
| Cayce to Castelo Branco | 3,969.19 mi (6,387.80 km) |
| Cayce to Castro Daire | 3,923.42 mi (6,314.13 km) |
| Cayce to Celorico de Basto | 3,909.67 mi (6,292.00 km) |
| Cayce to Chamusca | 3,930.35 mi (6,325.28 km) |
| Cayce to Chaves | 3,927.97 mi (6,321.46 km) |
| Cayce to Cinfaes | 3,909.18 mi (6,291.21 km) |
| Cayce to Coimbra | 3,913.84 mi (6,298.71 km) |
| Cayce to Condeixa-a-Nova | 3,912.38 mi (6,296.36 km) |
| Cayce to Corroios | 3,913.18 mi (6,297.65 km) |
| Cayce to Coruche | 3,937.08 mi (6,336.12 km) |
| Cayce to Costa de Caparica | 3,908.17 mi (6,289.60 km) |
| Cayce to Covilha | 3,958.62 mi (6,370.78 km) |
| Cayce to Eiras | 3,913.42 mi (6,298.03 km) |
| Cayce to Elvas | 4,008.88 mi (6,451.67 km) |
