| Formia to Serik | 982.53 mi (1,581.23 km) |
| Formia to Serinhisar | 871.98 mi (1,403.31 km) |
| Formia to Serinyol | 1,257.96 mi (2,024.49 km) |
| Formia to Seydisehir | 1,007.82 mi (1,621.92 km) |
| Formia to Seyhan | 1,197.54 mi (1,927.25 km) |
| Formia to Seyitgazi | 906.39 mi (1,458.70 km) |
| Formia to Siirt | 1,518.93 mi (2,444.47 km) |
| Formia to Sile | 830.16 mi (1,336.01 km) |
| Formia to Silifke | 1,141.51 mi (1,837.09 km) |
| Formia to Silivri | 760.19 mi (1,223.40 km) |
| Formia to Silopi | 1,560.96 mi (2,512.12 km) |
| Formia to Simav | 824.00 mi (1,326.10 km) |
| Formia to Sinanpasa | 895.80 mi (1,441.66 km) |
| Formia to Sindirgi | 779.37 mi (1,254.28 km) |
| Formia to Sinop | 1,110.13 mi (1,786.59 km) |
