| Porvoo to Sangeorz-Bai | 900.76 mi (1,449.64 km) |
| Porvoo to Sannicolau Mare | 1,011.24 mi (1,627.43 km) |
| Porvoo to Santana | 984.95 mi (1,585.12 km) |
| Porvoo to Satu Mare | 877.91 mi (1,412.85 km) |
| Porvoo to Scobinti | 900.42 mi (1,449.09 km) |
| Porvoo to Scornicesti | 1,094.33 mi (1,761.15 km) |
| Porvoo to Sebes | 1,000.96 mi (1,610.88 km) |
| Porvoo to Seini | 878.96 mi (1,414.54 km) |
| Porvoo to Sfantu-Gheorghe | 1,003.99 mi (1,615.77 km) |
| Porvoo to Sibiu | 1,010.75 mi (1,626.65 km) |
| Porvoo to Sighetu Marmatiei | 864.20 mi (1,390.80 km) |
| Porvoo to Sighisoara | 980.21 mi (1,577.50 km) |
| Porvoo to Simeria | 1,010.72 mi (1,626.60 km) |
| Porvoo to Sinaia | 1,039.48 mi (1,672.88 km) |
| Porvoo to Slatina | 1,104.36 mi (1,777.29 km) |
