| Mountlake Terrace to Snodland | 4,797.90 mi (7,721.47 km) |
| Mountlake Terrace to Soham | 4,739.73 mi (7,627.86 km) |
| Mountlake Terrace to Solihull | 4,680.45 mi (7,532.45 km) |
| Mountlake Terrace to Sompting | 4,804.58 mi (7,732.22 km) |
| Mountlake Terrace to South Hayling | 4,789.91 mi (7,708.62 km) |
| Mountlake Terrace to South Normanton | 4,654.37 mi (7,490.48 km) |
| Mountlake Terrace to South Ockendon | 4,783.35 mi (7,698.07 km) |
| Mountlake Terrace to South Shields | 4,550.63 mi (7,323.53 km) |
| Mountlake Terrace to Southall | 4,766.22 mi (7,670.49 km) |
| Mountlake Terrace to Southampton | 4,772.19 mi (7,680.09 km) |
| Mountlake Terrace to Southborough | 4,802.42 mi (7,728.75 km) |
| Mountlake Terrace to Southbourne | 4,771.35 mi (7,678.75 km) |
| Mountlake Terrace to Southend | 4,792.49 mi (7,712.77 km) |
| Mountlake Terrace to Southgate | 4,766.26 mi (7,670.56 km) |
| Mountlake Terrace to Southport | 4,582.13 mi (7,374.22 km) |
