| Alton to Sangeorgiu de Mures | 1,192.96 mi (1,919.89 km) |
| Alton to Sangeorz-Bai | 1,179.55 mi (1,898.31 km) |
| Alton to Sannicolau Mare | 1,042.48 mi (1,677.70 km) |
| Alton to Santana | 1,071.38 mi (1,724.23 km) |
| Alton to Satu Mare | 1,091.31 mi (1,756.30 km) |
| Alton to Scobinti | 1,276.82 mi (2,054.84 km) |
| Alton to Scornicesti | 1,259.79 mi (2,027.44 km) |
| Alton to Sebes | 1,172.08 mi (1,886.28 km) |
| Alton to Seini | 1,109.48 mi (1,785.54 km) |
| Alton to Sfantu-Gheorghe | 1,270.41 mi (2,044.53 km) |
| Alton to Sibiu | 1,202.27 mi (1,934.87 km) |
| Alton to Sighetu Marmatiei | 1,131.31 mi (1,820.67 km) |
| Alton to Sighisoara | 1,216.76 mi (1,958.18 km) |
| Alton to Simeria | 1,151.53 mi (1,853.21 km) |
| Alton to Sinaia | 1,276.44 mi (2,054.23 km) |
