| Willoughby to South Pasadena (California) | 2,053.88 mi (3,305.40 km) |
| Willoughby to South Plainfield (New Jersey) | 371.38 mi (597.69 km) |
| Willoughby to South Portland (Maine) | 581.06 mi (935.13 km) |
| Willoughby to South Riding (Virginia) | 278.94 mi (448.91 km) |
| Willoughby to South River (New Jersey) | 375.49 mi (604.29 km) |
| Willoughby to South Salt Lake (Utah) | 1,578.72 mi (2,540.71 km) |
| Willoughby to South San Francisco (California) | 2,178.42 mi (3,505.83 km) |
| Willoughby to South San Jose Hills (California) | 2,043.77 mi (3,289.13 km) |
| Willoughby to South Sioux City (Nebraska) | 770.80 mi (1,240.49 km) |
| Willoughby to South St. Paul (Minnesota) | 625.95 mi (1,007.37 km) |
| Willoughby to South Valley (New Mexico) | 1,438.39 mi (2,314.87 km) |
| Willoughby to South Venice (Florida) | 1,010.48 mi (1,626.21 km) |
| Willoughby to South Whittier (California) | 2,052.68 mi (3,303.47 km) |
| Willoughby to South Yarmouth (Massachusetts) | 578.17 mi (930.47 km) |
| Willoughby to Southaven (Mississippi) | 655.01 mi (1,054.14 km) |
