| Longford to Security-Widefield (Colorado) | 4,374.74 mi (7,040.46 km) |
| Longford to Sedalia (Missouri) | 3,955.98 mi (6,366.53 km) |
| Longford to Sedro-Woolley (Washington) | 4,406.84 mi (7,092.12 km) |
| Longford to Seguin (Texas) | 4,604.07 mi (7,409.53 km) |
| Longford to Selden (New York) | 3,065.46 mi (4,933.38 km) |
| Longford to Selma (Alabama) | 4,028.10 mi (6,482.59 km) |
| Longford to Selma (California) | 4,996.45 mi (8,041.00 km) |
| Longford to Selma (Texas) | 4,617.57 mi (7,431.26 km) |
| Longford to Seminole (Florida) | 4,090.14 mi (6,582.44 km) |
| Longford to Seven Hills (Ohio) | 3,384.58 mi (5,446.95 km) |
| Longford to Seven Oaks (South Carolina) | 3,710.92 mi (5,972.15 km) |
| Longford to Severn (Maryland) | 3,290.04 mi (5,294.81 km) |
| Longford to Severna Park (Maryland) | 3,287.19 mi (5,290.22 km) |
| Longford to Sevierville (Tennessee) | 3,718.07 mi (5,983.65 km) |
| Longford to Seymour (Indiana) | 3,662.33 mi (5,893.95 km) |
