| Viareggio to Siran | 1,495.77 mi (2,407.20 km) |
| Viareggio to Sirnak | 1,731.37 mi (2,786.36 km) |
| Viareggio to Sirvan | 1,694.42 mi (2,726.91 km) |
| Viareggio to Sivas | 1,401.01 mi (2,254.70 km) |
| Viareggio to Sivasli | 1,073.78 mi (1,728.08 km) |
| Viareggio to Siverek | 1,568.66 mi (2,524.52 km) |
| Viareggio to Sivrice | 1,548.77 mi (2,492.51 km) |
| Viareggio to Sivrihisar | 1,136.86 mi (1,829.61 km) |
| Viareggio to Sogut | 1,055.36 mi (1,698.44 km) |
| Viareggio to Sogutlu | 1,049.94 mi (1,689.72 km) |
| Viareggio to Soke | 989.36 mi (1,592.23 km) |
| Viareggio to Solhan | 1,621.57 mi (2,609.66 km) |
| Viareggio to Soma | 952.08 mi (1,532.22 km) |
| Viareggio to Sorgun | 1,308.60 mi (2,106.00 km) |
| Viareggio to Suhut | 1,114.19 mi (1,793.12 km) |
