| Round Rock to Snodland | 4,926.29 mi (7,928.09 km) |
| Round Rock to Soham | 4,891.99 mi (7,872.90 km) |
| Round Rock to Solihull | 4,808.67 mi (7,738.80 km) |
| Round Rock to Sompting | 4,910.37 mi (7,902.48 km) |
| Round Rock to South Hayling | 4,886.45 mi (7,863.98 km) |
| Round Rock to South Normanton | 4,805.83 mi (7,734.24 km) |
| Round Rock to South Ockendon | 4,914.64 mi (7,909.35 km) |
| Round Rock to South Shields | 4,750.33 mi (7,644.92 km) |
| Round Rock to Southall | 4,888.74 mi (7,867.67 km) |
| Round Rock to Southampton | 4,866.20 mi (7,831.39 km) |
| Round Rock to Southborough | 4,924.27 mi (7,924.84 km) |
| Round Rock to Southbourne | 4,855.75 mi (7,814.57 km) |
| Round Rock to Southend | 4,929.80 mi (7,933.75 km) |
| Round Rock to Southgate | 4,894.98 mi (7,877.72 km) |
| Round Rock to Southport | 4,728.13 mi (7,609.20 km) |
