| Viersen to Siran | 1,734.89 mi (2,792.04 km) |
| Viersen to Sirnak | 1,990.07 mi (3,202.70 km) |
| Viersen to Sirvan | 1,947.94 mi (3,134.90 km) |
| Viersen to Sivas | 1,665.35 mi (2,680.13 km) |
| Viersen to Sivasli | 1,431.30 mi (2,303.46 km) |
| Viersen to Siverek | 1,849.03 mi (2,975.72 km) |
| Viersen to Sivrice | 1,817.61 mi (2,925.16 km) |
| Viersen to Sivrihisar | 1,456.64 mi (2,344.23 km) |
| Viersen to Sogut | 1,376.89 mi (2,215.88 km) |
| Viersen to Sogutlu | 1,348.72 mi (2,170.56 km) |
| Viersen to Soke | 1,384.78 mi (2,228.59 km) |
| Viersen to Solhan | 1,867.68 mi (3,005.75 km) |
| Viersen to Soma | 1,318.61 mi (2,122.10 km) |
| Viersen to Sorgun | 1,587.24 mi (2,554.42 km) |
| Viersen to Suhut | 1,461.81 mi (2,352.56 km) |
