| Sleaford to Security-Widefield (Colorado) | 4,658.60 mi (7,497.29 km) |
| Sleaford to Sedalia (Missouri) | 4,253.27 mi (6,844.98 km) |
| Sleaford to Sedro-Woolley (Washington) | 4,641.02 mi (7,469.01 km) |
| Sleaford to Seguin (Texas) | 4,905.84 mi (7,895.18 km) |
| Sleaford to Selden (New York) | 3,373.19 mi (5,428.63 km) |
| Sleaford to Selma (Alabama) | 4,334.81 mi (6,976.20 km) |
| Sleaford to Selma (California) | 5,258.95 mi (8,463.46 km) |
| Sleaford to Selma (Texas) | 4,919.06 mi (7,916.46 km) |
| Sleaford to Seminole (Florida) | 4,398.72 mi (7,079.06 km) |
| Sleaford to Seven Hills (Ohio) | 3,688.07 mi (5,935.38 km) |
| Sleaford to Seven Oaks (South Carolina) | 4,018.95 mi (6,467.87 km) |
| Sleaford to Severn (Maryland) | 3,597.47 mi (5,789.57 km) |
| Sleaford to Severna Park (Maryland) | 3,594.68 mi (5,785.07 km) |
| Sleaford to Sevierville (Tennessee) | 4,024.53 mi (6,476.86 km) |
| Sleaford to Seymour (Indiana) | 3,965.31 mi (6,381.56 km) |
