| Syston to Cascais | 1,045.95 mi (1,683.30 km) |
| Syston to Castelo Branco | 940.57 mi (1,513.70 km) |
| Syston to Castro Daire | 876.40 mi (1,410.43 km) |
| Syston to Celorico de Basto | 846.13 mi (1,361.71 km) |
| Syston to Chamusca | 987.14 mi (1,588.65 km) |
| Syston to Chaves | 813.67 mi (1,309.47 km) |
| Syston to Cinfaes | 866.89 mi (1,395.12 km) |
| Syston to Coimbra | 929.94 mi (1,496.59 km) |
| Syston to Condeixa-a-Nova | 937.33 mi (1,508.49 km) |
| Syston to Corroios | 1,046.77 mi (1,684.61 km) |
| Syston to Coruche | 1,013.67 mi (1,631.34 km) |
| Syston to Costa de Caparica | 1,046.31 mi (1,683.88 km) |
| Syston to Covilha | 909.74 mi (1,464.09 km) |
| Syston to Eiras | 927.82 mi (1,493.19 km) |
| Syston to Elvas | 998.65 mi (1,607.17 km) |
