| Mountain Ash to Soham | 164.30 mi (264.41 km) |
| Mountain Ash to Solihull | 84.76 mi (136.41 km) |
| Mountain Ash to Sompting | 143.98 mi (231.72 km) |
| Mountain Ash to South Hayling | 120.88 mi (194.54 km) |
| Mountain Ash to South Normanton | 130.65 mi (210.26 km) |
| Mountain Ash to South Ockendon | 158.08 mi (254.41 km) |
| Mountain Ash to South Shields | 242.63 mi (390.48 km) |
| Mountain Ash to Southall | 129.34 mi (208.15 km) |
| Mountain Ash to Southampton | 100.88 mi (162.35 km) |
| Mountain Ash to Southborough | 161.09 mi (259.25 km) |
| Mountain Ash to Southbourne | 95.29 mi (153.35 km) |
| Mountain Ash to Southend | 175.65 mi (282.68 km) |
| Mountain Ash to Southgate | 139.45 mi (224.43 km) |
| Mountain Ash to Southport | 136.74 mi (220.07 km) |
| Mountain Ash to Southwater | 138.26 mi (222.52 km) |
