| Round Rock to Sucha Beskidzka | 5,691.47 mi (9,159.53 km) |
| Round Rock to Suchanino | 5,459.15 mi (8,785.65 km) |
| Round Rock to Sulechow | 5,455.56 mi (8,779.88 km) |
| Round Rock to Sulecin | 5,423.59 mi (8,728.43 km) |
| Round Rock to Sulejowek | 5,636.97 mi (9,071.83 km) |
| Round Rock to Suwalki | 5,604.78 mi (9,020.01 km) |
| Round Rock to Swarzedz | 5,491.41 mi (8,837.58 km) |
| Round Rock to Swidnica | 5,536.38 mi (8,909.94 km) |
| Round Rock to Swidnik | 5,729.39 mi (9,220.57 km) |
| Round Rock to Swidwin | 5,391.25 mi (8,676.37 km) |
| Round Rock to Swiebodzice | 5,530.46 mi (8,900.41 km) |
| Round Rock to Swiecie | 5,493.71 mi (8,841.27 km) |
| Round Rock to Swiedbodzin | 5,445.91 mi (8,764.34 km) |
| Round Rock to Swietochlowice | 5,644.31 mi (9,083.64 km) |
| Round Rock to Swinoujscie | 5,335.59 mi (8,586.80 km) |
