| Circleville to Sesimbra | 3,844.42 mi (6,186.99 km) |
| Circleville to Setubal | 3,851.98 mi (6,199.17 km) |
| Circleville to Sever do Vouga | 3,810.83 mi (6,132.94 km) |
| Circleville to Silves | 3,915.78 mi (6,301.84 km) |
| Circleville to Sines | 3,870.93 mi (6,229.65 km) |
| Circleville to Sintra | 3,819.60 mi (6,147.06 km) |
| Circleville to Sobrado de Paiva | 3,806.77 mi (6,126.40 km) |
| Circleville to Sobral de Monte Agraco | 3,824.41 mi (6,154.79 km) |
| Circleville to Soure | 3,818.37 mi (6,145.07 km) |
| Circleville to Tabua | 3,837.89 mi (6,176.48 km) |
| Circleville to Tavira | 3,956.56 mi (6,367.47 km) |
| Circleville to Tomar | 3,842.20 mi (6,183.43 km) |
| Circleville to Tondela | 3,830.67 mi (6,164.86 km) |
| Circleville to Torre de Moncorvo | 3,855.22 mi (6,204.38 km) |
| Circleville to Torres Novas | 3,840.63 mi (6,180.90 km) |
