| Castel Gandolfo to Security-Widefield (Colorado) | 5,625.21 mi (9,052.90 km) |
| Castel Gandolfo to Sedalia (Missouri) | 5,189.46 mi (8,351.63 km) |
| Castel Gandolfo to Sedro-Woolley (Washington) | 5,622.41 mi (9,048.40 km) |
| Castel Gandolfo to Seguin (Texas) | 5,820.68 mi (9,367.47 km) |
| Castel Gandolfo to Selden (New York) | 4,245.36 mi (6,832.25 km) |
| Castel Gandolfo to Selma (Alabama) | 5,214.11 mi (8,391.30 km) |
| Castel Gandolfo to Selma (California) | 6,243.26 mi (10,047.56 km) |
| Castel Gandolfo to Selma (Texas) | 5,835.35 mi (9,391.10 km) |
| Castel Gandolfo to Seminole (Florida) | 5,224.27 mi (8,407.65 km) |
| Castel Gandolfo to Seven Hills (Ohio) | 4,598.22 mi (7,400.13 km) |
| Castel Gandolfo to Seven Oaks (South Carolina) | 4,879.21 mi (7,852.32 km) |
| Castel Gandolfo to Severn (Maryland) | 4,472.60 mi (7,197.96 km) |
| Castel Gandolfo to Severna Park (Maryland) | 4,468.88 mi (7,191.97 km) |
| Castel Gandolfo to Sevierville (Tennessee) | 4,908.75 mi (7,899.87 km) |
| Castel Gandolfo to Seymour (Indiana) | 4,877.17 mi (7,849.04 km) |
