| Castel Gandolfo to Spilamberto | 209.42 mi (337.03 km) |
| Castel Gandolfo to Spilimbergo | 302.93 mi (487.52 km) |
| Castel Gandolfo to Spinea | 260.00 mi (418.43 km) |
| Castel Gandolfo to Spoleto | 69.78 mi (112.30 km) |
| Castel Gandolfo to Spoltore | 90.62 mi (145.84 km) |
| Castel Gandolfo to Spresiano | 279.61 mi (449.98 km) |
| Castel Gandolfo to Squinzano | 295.33 mi (475.28 km) |
| Castel Gandolfo to Statte | 250.22 mi (402.69 km) |
| Castel Gandolfo to Stezzano | 308.49 mi (496.47 km) |
| Castel Gandolfo to Strada | 143.87 mi (231.54 km) |
| Castel Gandolfo to Stradella | 285.32 mi (459.18 km) |
| Castel Gandolfo to Striano | 118.38 mi (190.51 km) |
| Castel Gandolfo to Subiaco | 26.42 mi (42.52 km) |
| Castel Gandolfo to Sulmona | 68.76 mi (110.66 km) |
| Castel Gandolfo to Surbo | 300.23 mi (483.17 km) |
