| Willebroek to Security-Widefield (Colorado) | 4,901.03 mi (7,887.44 km) |
| Willebroek to Sedalia (Missouri) | 4,495.68 mi (7,235.10 km) |
| Willebroek to Sedro-Woolley (Washington) | 4,868.21 mi (7,834.62 km) |
| Willebroek to Seguin (Texas) | 5,146.93 mi (8,283.18 km) |
| Willebroek to Selden (New York) | 3,608.37 mi (5,807.11 km) |
| Willebroek to Selma (Alabama) | 4,571.86 mi (7,357.70 km) |
| Willebroek to Selma (California) | 5,496.28 mi (8,845.41 km) |
| Willebroek to Selma (Texas) | 5,160.28 mi (8,304.67 km) |
| Willebroek to Seminole (Florida) | 4,628.37 mi (7,448.64 km) |
| Willebroek to Seven Hills (Ohio) | 3,928.20 mi (6,321.83 km) |
| Willebroek to Seven Oaks (South Carolina) | 4,253.20 mi (6,844.87 km) |
| Willebroek to Severn (Maryland) | 3,833.31 mi (6,169.12 km) |
| Willebroek to Severna Park (Maryland) | 3,830.39 mi (6,164.41 km) |
| Willebroek to Sevierville (Tennessee) | 4,261.95 mi (6,858.94 km) |
| Willebroek to Seymour (Indiana) | 4,205.76 mi (6,768.51 km) |
