| Mountain Ash to Sunbury | 128.20 mi (206.32 km) |
| Mountain Ash to Sunderland | 237.56 mi (382.32 km) |
| Mountain Ash to Sunninghill | 118.63 mi (190.92 km) |
| Mountain Ash to Surbiton | 133.51 mi (214.86 km) |
| Mountain Ash to Sutton | 138.55 mi (222.97 km) |
| Mountain Ash to Sutton Coldfield | 89.85 mi (144.60 km) |
| Mountain Ash to Sutton in Ashfield | 133.86 mi (215.43 km) |
| Mountain Ash to Sutton on Hull | 193.83 mi (311.94 km) |
| Mountain Ash to Swadlincote | 107.91 mi (173.67 km) |
| Mountain Ash to Swallownest | 144.71 mi (232.89 km) |
| Mountain Ash to Swanage | 96.35 mi (155.07 km) |
| Mountain Ash to Swindon | 69.11 mi (111.22 km) |
| Mountain Ash to Swinton | 151.93 mi (244.50 km) |
| Mountain Ash to Swinton | 133.78 mi (215.30 km) |
| Mountain Ash to Syston | 120.15 mi (193.36 km) |
