| Round Rock to Sudbury | 4,915.69 mi (7,911.04 km) |
| Round Rock to Sunbury | 4,889.56 mi (7,868.99 km) |
| Round Rock to Sunderland | 4,754.55 mi (7,651.71 km) |
| Round Rock to Sunninghill | 4,881.15 mi (7,855.45 km) |
| Round Rock to Surbiton | 4,894.98 mi (7,877.71 km) |
| Round Rock to Sutton | 4,900.13 mi (7,886.00 km) |
| Round Rock to Sutton Coldfield | 4,802.78 mi (7,729.33 km) |
| Round Rock to Sutton in Ashfield | 4,808.43 mi (7,738.42 km) |
| Round Rock to Sutton on Hull | 4,825.69 mi (7,766.20 km) |
| Round Rock to Swadlincote | 4,807.03 mi (7,736.17 km) |
| Round Rock to Swallownest | 4,799.35 mi (7,723.80 km) |
| Round Rock to Swanage | 4,852.54 mi (7,809.41 km) |
| Round Rock to Swindon | 4,832.61 mi (7,777.33 km) |
| Round Rock to Swinton | 4,796.22 mi (7,718.78 km) |
| Round Rock to Swinton | 4,756.87 mi (7,655.44 km) |
