| Niel to Setubal | 1,081.43 mi (1,740.39 km) |
| Niel to Sever do Vouga | 939.24 mi (1,511.57 km) |
| Niel to Silves | 1,148.41 mi (1,848.18 km) |
| Niel to Sines | 1,114.14 mi (1,793.04 km) |
| Niel to Sintra | 1,079.98 mi (1,738.07 km) |
| Niel to Sobrado de Paiva | 919.44 mi (1,479.69 km) |
| Niel to Sobral de Monte Agraco | 1,060.36 mi (1,706.49 km) |
| Niel to Soure | 985.85 mi (1,586.58 km) |
| Niel to Tabua | 950.09 mi (1,529.03 km) |
| Niel to Tavira | 1,132.10 mi (1,821.94 km) |
| Niel to Tomar | 1,005.13 mi (1,617.60 km) |
| Niel to Tondela | 942.82 mi (1,517.33 km) |
| Niel to Torre de Moncorvo | 875.73 mi (1,409.35 km) |
| Niel to Torres Novas | 1,016.24 mi (1,635.48 km) |
| Niel to Torres Vedras | 1,060.03 mi (1,705.95 km) |
