| Rhondda to Sentrupert | 924.68 mi (1,488.13 km) |
| Rhondda to Sevnica | 932.29 mi (1,500.38 km) |
| Rhondda to Sezana | 885.46 mi (1,425.01 km) |
| Rhondda to Skocjan | 935.47 mi (1,505.49 km) |
| Rhondda to Skofja Loka | 885.67 mi (1,425.35 km) |
| Rhondda to Skofljica | 903.48 mi (1,454.01 km) |
| Rhondda to Slovenj Gradec | 905.49 mi (1,457.24 km) |
| Rhondda to Slovenska Bistrica | 930.06 mi (1,496.79 km) |
| Rhondda to Slovenske Konjice | 925.59 mi (1,489.59 km) |
| Rhondda to Smarje | 933.33 mi (1,502.06 km) |
| Rhondda to Smarjeske Toplice | 934.23 mi (1,503.50 km) |
| Rhondda to Smartno | 912.31 mi (1,468.22 km) |
| Rhondda to Smartno | 909.78 mi (1,464.14 km) |
| Rhondda to Sodrazica | 914.15 mi (1,471.18 km) |
| Rhondda to Solcava | 892.60 mi (1,436.51 km) |
