| Erkrath to Somma Lombardo | 391.43 mi (629.95 km) |
| Erkrath to Somma Vesuviana | 800.03 mi (1,287.53 km) |
| Erkrath to Sommacampagna | 441.00 mi (709.72 km) |
| Erkrath to Sona | 438.56 mi (705.80 km) |
| Erkrath to Sondrio | 374.24 mi (602.28 km) |
| Erkrath to Sora | 729.48 mi (1,173.98 km) |
| Erkrath to Sorbolo | 469.78 mi (756.04 km) |
| Erkrath to Soresina | 431.89 mi (695.07 km) |
| Erkrath to Sorisole | 399.26 mi (642.54 km) |
| Erkrath to Sorrento | 814.17 mi (1,310.28 km) |
| Erkrath to Sorso | 724.69 mi (1,166.28 km) |
| Erkrath to Sortino | 1,049.68 mi (1,689.30 km) |
| Erkrath to Soverato Marina | 984.34 mi (1,584.14 km) |
| Erkrath to Sovicille | 584.57 mi (940.77 km) |
| Erkrath to Spello | 629.65 mi (1,013.32 km) |
