| Donostia to Sangeorgiu de Mures | 1,306.29 mi (2,102.27 km) |
| Donostia to Sangeorz-Bai | 1,317.63 mi (2,120.53 km) |
| Donostia to Sannicolau Mare | 1,121.84 mi (1,805.43 km) |
| Donostia to Santana | 1,164.85 mi (1,874.64 km) |
| Donostia to Satu Mare | 1,236.32 mi (1,989.66 km) |
| Donostia to Scobinti | 1,423.04 mi (2,290.17 km) |
| Donostia to Scornicesti | 1,316.81 mi (2,119.19 km) |
| Donostia to Sebes | 1,263.71 mi (2,033.75 km) |
| Donostia to Seini | 1,254.35 mi (2,018.68 km) |
| Donostia to Sfantu-Gheorghe | 1,370.46 mi (2,205.55 km) |
| Donostia to Sibiu | 1,291.97 mi (2,079.23 km) |
| Donostia to Sighetu Marmatiei | 1,283.44 mi (2,065.50 km) |
| Donostia to Sighisoara | 1,321.92 mi (2,127.42 km) |
| Donostia to Simeria | 1,236.91 mi (1,990.61 km) |
| Donostia to Sinaia | 1,361.11 mi (2,190.50 km) |
