| Niederkassel to Sevnica | 503.65 mi (810.55 km) |
| Niederkassel to Sezana | 472.60 mi (760.58 km) |
| Niederkassel to Skocjan | 508.17 mi (817.83 km) |
| Niederkassel to Skofja Loka | 462.20 mi (743.84 km) |
| Niederkassel to Skofljica | 480.41 mi (773.15 km) |
| Niederkassel to Slovenj Gradec | 472.18 mi (759.90 km) |
| Niederkassel to Slovenska Bistrica | 495.29 mi (797.09 km) |
| Niederkassel to Slovenske Konjice | 492.27 mi (792.23 km) |
| Niederkassel to Smarje | 500.74 mi (805.86 km) |
| Niederkassel to Smarjeske Toplice | 507.98 mi (817.52 km) |
| Niederkassel to Smartno | 486.39 mi (782.78 km) |
| Niederkassel to Smartno | 478.95 mi (770.79 km) |
| Niederkassel to Sodrazica | 493.64 mi (794.44 km) |
| Niederkassel to Solcava | 462.87 mi (744.92 km) |
| Niederkassel to Sostanj | 477.13 mi (767.87 km) |
