| Ostrow Mazowiecka to Setubal | 1,763.22 mi (2,837.63 km) |
| Ostrow Mazowiecka to Sever do Vouga | 1,639.55 mi (2,638.60 km) |
| Ostrow Mazowiecka to Silves | 1,811.32 mi (2,915.04 km) |
| Ostrow Mazowiecka to Sines | 1,789.72 mi (2,880.27 km) |
| Ostrow Mazowiecka to Sintra | 1,769.41 mi (2,847.59 km) |
| Ostrow Mazowiecka to Sobrado de Paiva | 1,622.11 mi (2,610.53 km) |
| Ostrow Mazowiecka to Sobral de Monte Agraco | 1,749.80 mi (2,816.03 km) |
| Ostrow Mazowiecka to Soure | 1,681.25 mi (2,705.70 km) |
| Ostrow Mazowiecka to Tabua | 1,643.18 mi (2,644.45 km) |
| Ostrow Mazowiecka to Tavira | 1,784.96 mi (2,872.61 km) |
| Ostrow Mazowiecka to Tomar | 1,693.63 mi (2,725.63 km) |
| Ostrow Mazowiecka to Tondela | 1,638.16 mi (2,636.37 km) |
| Ostrow Mazowiecka to Torre de Moncorvo | 1,569.73 mi (2,526.23 km) |
| Ostrow Mazowiecka to Torres Novas | 1,704.44 mi (2,743.03 km) |
| Ostrow Mazowiecka to Torres Vedras | 1,751.21 mi (2,818.30 km) |
