| Mostoles to Sangeorgiu de Mures | 1,475.78 mi (2,375.04 km) |
| Mostoles to Sangeorz-Bai | 1,493.20 mi (2,403.07 km) |
| Mostoles to Sannicolau Mare | 1,288.97 mi (2,074.40 km) |
| Mostoles to Santana | 1,333.99 mi (2,146.85 km) |
| Mostoles to Satu Mare | 1,416.03 mi (2,278.88 km) |
| Mostoles to Scobinti | 1,597.86 mi (2,571.50 km) |
| Mostoles to Scornicesti | 1,470.12 mi (2,365.93 km) |
| Mostoles to Sebes | 1,428.74 mi (2,299.33 km) |
| Mostoles to Seini | 1,433.48 mi (2,306.96 km) |
| Mostoles to Sfantu-Gheorghe | 1,534.40 mi (2,469.38 km) |
| Mostoles to Sibiu | 1,455.51 mi (2,342.42 km) |
| Mostoles to Sighetu Marmatiei | 1,463.48 mi (2,355.24 km) |
| Mostoles to Sighisoara | 1,488.73 mi (2,395.88 km) |
| Mostoles to Simeria | 1,401.17 mi (2,254.96 km) |
| Mostoles to Sinaia | 1,521.01 mi (2,447.83 km) |
