| Difficult Run to Sucha Beskidzka | 4,509.04 mi (7,256.60 km) |
| Difficult Run to Suchanino | 4,311.38 mi (6,938.49 km) |
| Difficult Run to Sulechow | 4,278.30 mi (6,885.27 km) |
| Difficult Run to Sulecin | 4,247.71 mi (6,836.03 km) |
| Difficult Run to Sulejowek | 4,480.55 mi (7,210.74 km) |
| Difficult Run to Suwalki | 4,470.67 mi (7,194.84 km) |
| Difficult Run to Swarzedz | 4,321.55 mi (6,954.87 km) |
| Difficult Run to Swidnica | 4,352.05 mi (7,003.95 km) |
| Difficult Run to Swidnik | 4,569.91 mi (7,354.56 km) |
| Difficult Run to Swidwin | 4,228.87 mi (6,805.71 km) |
| Difficult Run to Swiebodzice | 4,345.78 mi (6,993.86 km) |
| Difficult Run to Swiecie | 4,337.04 mi (6,979.78 km) |
| Difficult Run to Swiedbodzin | 4,269.75 mi (6,871.50 km) |
| Difficult Run to Swietochlowice | 4,463.76 mi (7,183.73 km) |
| Difficult Run to Swinoujscie | 4,169.61 mi (6,710.33 km) |
