| Sliven to Security-Widefield (Colorado) | 6,028.91 mi (9,702.59 km) |
| Sliven to Sedalia (Missouri) | 5,658.88 mi (9,107.09 km) |
| Sliven to Sedro-Woolley (Washington) | 5,852.41 mi (9,418.54 km) |
| Sliven to Seguin (Texas) | 6,319.30 mi (10,169.93 km) |
| Sliven to Selden (New York) | 4,790.07 mi (7,708.87 km) |
| Sliven to Selma (Alabama) | 5,752.96 mi (9,258.49 km) |
| Sliven to Selma (California) | 6,556.12 mi (10,551.06 km) |
| Sliven to Selma (Texas) | 6,332.03 mi (10,190.41 km) |
| Sliven to Seminole (Florida) | 5,806.89 mi (9,345.29 km) |
| Sliven to Seven Hills (Ohio) | 5,104.63 mi (8,215.10 km) |
| Sliven to Seven Oaks (South Carolina) | 5,434.82 mi (8,746.50 km) |
| Sliven to Severn (Maryland) | 5,014.92 mi (8,070.73 km) |
| Sliven to Severna Park (Maryland) | 5,012.02 mi (8,066.07 km) |
| Sliven to Sevierville (Tennessee) | 5,442.77 mi (8,759.29 km) |
| Sliven to Seymour (Indiana) | 5,381.14 mi (8,660.11 km) |
