| Solothurn to Sangeorgiu de Mures | 799.42 mi (1,286.54 km) |
| Solothurn to Sangeorz-Bai | 801.98 mi (1,290.66 km) |
| Solothurn to Sannicolau Mare | 624.79 mi (1,005.51 km) |
| Solothurn to Santana | 662.61 mi (1,066.37 km) |
| Solothurn to Satu Mare | 716.70 mi (1,153.41 km) |
| Solothurn to Scobinti | 906.73 mi (1,459.24 km) |
| Solothurn to Scornicesti | 836.68 mi (1,346.50 km) |
| Solothurn to Sebes | 765.04 mi (1,231.21 km) |
| Solothurn to Seini | 735.17 mi (1,183.15 km) |
| Solothurn to Sfantu-Gheorghe | 870.55 mi (1,401.01 km) |
| Solothurn to Sibiu | 794.88 mi (1,279.24 km) |
| Solothurn to Sighetu Marmatiei | 762.72 mi (1,227.48 km) |
| Solothurn to Sighisoara | 818.74 mi (1,317.64 km) |
| Solothurn to Simeria | 740.42 mi (1,191.59 km) |
| Solothurn to Sinaia | 867.98 mi (1,396.87 km) |
