| Kastamonu to Sangeorgiu de Mures | 584.26 mi (940.28 km) |
| Kastamonu to Sangeorz-Bai | 610.25 mi (982.10 km) |
| Kastamonu to Sannicolau Mare | 731.56 mi (1,177.33 km) |
| Kastamonu to Santana | 700.37 mi (1,127.14 km) |
| Kastamonu to Satu Mare | 694.10 mi (1,117.04 km) |
| Kastamonu to Scobinti | 534.77 mi (860.63 km) |
| Kastamonu to Scornicesti | 515.58 mi (829.75 km) |
| Kastamonu to Sebes | 599.71 mi (965.14 km) |
| Kastamonu to Seini | 677.56 mi (1,090.42 km) |
| Kastamonu to Sfantu-Gheorghe | 505.34 mi (813.27 km) |
| Kastamonu to Sibiu | 569.61 mi (916.69 km) |
| Kastamonu to Sighetu Marmatiei | 663.07 mi (1,067.11 km) |
| Kastamonu to Sighisoara | 558.58 mi (898.95 km) |
| Kastamonu to Simeria | 620.21 mi (998.13 km) |
| Kastamonu to Sinaia | 495.67 mi (797.70 km) |
