| Formia to Selvazzano Dentro | 298.96 mi (481.13 km) |
| Formia to Senago | 373.45 mi (601.02 km) |
| Formia to Senigallia | 170.24 mi (273.98 km) |
| Formia to Seravezza | 255.38 mi (411.00 km) |
| Formia to Seregno | 375.09 mi (603.64 km) |
| Formia to Seriate | 362.38 mi (583.19 km) |
| Formia to Sermoneta | 38.22 mi (61.50 km) |
| Formia to Serramanna | 278.08 mi (447.52 km) |
| Formia to Serravalle Pistoiese | 230.52 mi (370.99 km) |
| Formia to Sessa Aurunca | 16.61 mi (26.73 km) |
| Formia to Sesto Calende | 396.85 mi (638.66 km) |
| Formia to Sesto Fiorentino | 215.80 mi (347.30 km) |
| Formia to Sesto San Giovanni | 367.74 mi (591.82 km) |
| Formia to Sestri Levante | 298.32 mi (480.10 km) |
| Formia to Sestu | 274.46 mi (441.70 km) |
