| Risca to Santarem | 896.32 mi (1,442.49 km) |
| Risca to Santiago do Cacem | 977.75 mi (1,573.54 km) |
| Risca to Santo Andre | 976.20 mi (1,571.05 km) |
| Risca to Santo Tirso | 754.08 mi (1,213.57 km) |
| Risca to Sao Bras de Alportel | 1,026.03 mi (1,651.24 km) |
| Risca to Sao Felix da Marinha | 776.25 mi (1,249.26 km) |
| Risca to Sao Joao da Madeira | 783.15 mi (1,260.35 km) |
| Risca to Sao Joao de Ver | 780.37 mi (1,255.89 km) |
| Risca to Sao Mamede de Infesta | 764.97 mi (1,231.11 km) |
| Risca to Sao Pedro do Sul | 786.60 mi (1,265.91 km) |
| Risca to Satao | 783.10 mi (1,260.28 km) |
| Risca to Seia | 803.51 mi (1,293.12 km) |
| Risca to Senhora da Hora | 766.72 mi (1,233.91 km) |
| Risca to Serpa | 969.11 mi (1,559.63 km) |
| Risca to Serta | 850.38 mi (1,368.56 km) |
