| Hennef to Security-Widefield (Colorado) | 5,011.23 mi (8,064.79 km) |
| Hennef to Sedalia (Missouri) | 4,613.39 mi (7,424.54 km) |
| Hennef to Sedro-Woolley (Washington) | 4,954.58 mi (7,973.62 km) |
| Hennef to Seguin (Texas) | 5,267.35 mi (8,476.98 km) |
| Hennef to Selden (New York) | 3,733.49 mi (6,008.48 km) |
| Hennef to Selma (Alabama) | 4,696.02 mi (7,557.51 km) |
| Hennef to Selma (California) | 5,595.25 mi (9,004.68 km) |
| Hennef to Selma (Texas) | 5,280.51 mi (8,498.16 km) |
| Hennef to Seminole (Florida) | 4,755.42 mi (7,653.10 km) |
| Hennef to Seven Hills (Ohio) | 4,049.86 mi (6,517.63 km) |
| Hennef to Seven Oaks (South Carolina) | 4,378.76 mi (7,046.94 km) |
| Hennef to Severn (Maryland) | 3,958.12 mi (6,369.98 km) |
| Hennef to Severna Park (Maryland) | 3,955.26 mi (6,365.38 km) |
| Hennef to Sevierville (Tennessee) | 4,385.87 mi (7,058.38 km) |
| Hennef to Seymour (Indiana) | 4,327.06 mi (6,963.72 km) |
