| Seia to Sangeorz-Bai | 1,668.60 mi (2,685.35 km) |
| Seia to Sannicolau Mare | 1,468.80 mi (2,363.80 km) |
| Seia to Santana | 1,512.84 mi (2,434.68 km) |
| Seia to Satu Mare | 1,588.68 mi (2,556.73 km) |
| Seia to Scobinti | 1,773.85 mi (2,854.74 km) |
| Seia to Scornicesti | 1,656.73 mi (2,666.24 km) |
| Seia to Sebes | 1,609.92 mi (2,590.92 km) |
| Seia to Seini | 1,606.54 mi (2,585.47 km) |
| Seia to Sfantu-Gheorghe | 1,716.31 mi (2,762.13 km) |
| Seia to Sibiu | 1,637.48 mi (2,635.27 km) |
| Seia to Sighetu Marmatiei | 1,635.97 mi (2,632.85 km) |
| Seia to Sighisoara | 1,669.09 mi (2,686.15 km) |
| Seia to Simeria | 1,582.68 mi (2,547.08 km) |
| Seia to Sinaia | 1,704.84 mi (2,743.67 km) |
| Seia to Slatina | 1,647.83 mi (2,651.93 km) |
