| Glenn Dale to Sestu | 4,408.17 mi (7,094.26 km) |
| Glenn Dale to Settimo Torinese | 4,155.85 mi (6,688.19 km) |
| Glenn Dale to Seveso | 4,199.02 mi (6,757.68 km) |
| Glenn Dale to Sezze | 4,510.50 mi (7,258.95 km) |
| Glenn Dale to Siano | 4,607.87 mi (7,415.65 km) |
| Glenn Dale to Siena | 4,370.62 mi (7,033.84 km) |
| Glenn Dale to Signa | 4,344.76 mi (6,992.22 km) |
| Glenn Dale to Silea | 4,333.18 mi (6,973.58 km) |
| Glenn Dale to Silvi Paese | 4,519.00 mi (7,272.63 km) |
| Glenn Dale to Sinalunga | 4,391.67 mi (7,067.71 km) |
| Glenn Dale to Siniscola | 4,391.72 mi (7,067.80 km) |
| Glenn Dale to Sinnai | 4,413.19 mi (7,102.35 km) |
| Glenn Dale to Siracusa | 4,775.06 mi (7,684.72 km) |
| Glenn Dale to Solaro | 4,197.63 mi (6,755.43 km) |
| Glenn Dale to Soliera | 4,305.22 mi (6,928.59 km) |
