| Peso da Regua to Siran | 2,428.36 mi (3,908.06 km) |
| Peso da Regua to Sirnak | 2,658.83 mi (4,278.97 km) |
| Peso da Regua to Sirvan | 2,623.29 mi (4,221.77 km) |
| Peso da Regua to Sivas | 2,330.65 mi (3,750.82 km) |
| Peso da Regua to Sivasli | 1,981.04 mi (3,188.18 km) |
| Peso da Regua to Siverek | 2,492.67 mi (4,011.56 km) |
| Peso da Regua to Sivrice | 2,475.87 mi (3,984.53 km) |
| Peso da Regua to Sivrihisar | 2,057.17 mi (3,310.70 km) |
| Peso da Regua to Sogut | 1,977.23 mi (3,182.04 km) |
| Peso da Regua to Sogutlu | 1,977.82 mi (3,182.99 km) |
| Peso da Regua to Soke | 1,878.94 mi (3,023.86 km) |
| Peso da Regua to Solhan | 2,552.33 mi (4,107.58 km) |
| Peso da Regua to Soma | 1,860.15 mi (2,993.63 km) |
| Peso da Regua to Sorgun | 2,236.57 mi (3,599.41 km) |
| Peso da Regua to Suhut | 2,024.54 mi (3,258.19 km) |
