| Port Huron to Sierpc | 4,365.84 mi (7,026.15 km) |
| Port Huron to Skarzysko-Kamienna | 4,482.28 mi (7,213.53 km) |
| Port Huron to Skawina | 4,493.10 mi (7,230.95 km) |
| Port Huron to Skierniewice | 4,420.26 mi (7,113.72 km) |
| Port Huron to Skoczow | 4,464.01 mi (7,184.12 km) |
| Port Huron to Skwierzyna | 4,235.35 mi (6,816.14 km) |
| Port Huron to Slawno | 4,206.88 mi (6,770.31 km) |
| Port Huron to Slubice | 4,212.50 mi (6,779.36 km) |
| Port Huron to Slupca | 4,328.81 mi (6,966.55 km) |
| Port Huron to Slupsk | 4,214.45 mi (6,782.51 km) |
| Port Huron to Sochaczew | 4,411.89 mi (7,100.25 km) |
| Port Huron to Sokolka | 4,469.46 mi (7,192.90 km) |
| Port Huron to Sokolow Podlaski | 4,472.01 mi (7,197.00 km) |
| Port Huron to Solec Kujawski | 4,309.59 mi (6,935.61 km) |
| Port Huron to Sopot | 4,265.73 mi (6,865.02 km) |
