| Serpa to Sangeorz-Bai | 1,749.19 mi (2,815.05 km) |
| Serpa to Sannicolau Mare | 1,543.20 mi (2,483.55 km) |
| Serpa to Santana | 1,588.65 mi (2,556.69 km) |
| Serpa to Satu Mare | 1,673.09 mi (2,692.58 km) |
| Serpa to Scobinti | 1,853.48 mi (2,982.89 km) |
| Serpa to Scornicesti | 1,719.14 mi (2,766.69 km) |
| Serpa to Sebes | 1,681.93 mi (2,706.81 km) |
| Serpa to Seini | 1,690.39 mi (2,720.42 km) |
| Serpa to Sfantu-Gheorghe | 1,786.95 mi (2,875.82 km) |
| Serpa to Sibiu | 1,708.16 mi (2,749.01 km) |
| Serpa to Sighetu Marmatiei | 1,720.54 mi (2,768.94 km) |
| Serpa to Sighisoara | 1,742.31 mi (2,803.97 km) |
| Serpa to Simeria | 1,654.20 mi (2,662.18 km) |
| Serpa to Sinaia | 1,772.24 mi (2,852.15 km) |
| Serpa to Slatina | 1,709.32 mi (2,750.88 km) |
