| Skien to Sangeorz-Bai | 1,024.22 mi (1,648.32 km) |
| Skien to Sannicolau Mare | 1,016.68 mi (1,636.20 km) |
| Skien to Santana | 1,015.63 mi (1,634.51 km) |
| Skien to Satu Mare | 956.83 mi (1,539.87 km) |
| Skien to Scobinti | 1,080.94 mi (1,739.60 km) |
| Skien to Scornicesti | 1,190.53 mi (1,915.97 km) |
| Skien to Sebes | 1,083.32 mi (1,743.44 km) |
| Skien to Seini | 968.49 mi (1,558.64 km) |
| Skien to Sfantu-Gheorghe | 1,140.53 mi (1,835.50 km) |
| Skien to Sibiu | 1,106.53 mi (1,780.79 km) |
| Skien to Sighetu Marmatiei | 972.17 mi (1,564.56 km) |
| Skien to Sighisoara | 1,095.55 mi (1,763.12 km) |
| Skien to Simeria | 1,077.97 mi (1,734.82 km) |
| Skien to Sinaia | 1,165.71 mi (1,876.03 km) |
| Skien to Slatina | 1,195.16 mi (1,923.42 km) |
