| Rennes to Sangeorz-Bai | 1,219.81 mi (1,963.10 km) |
| Rennes to Sannicolau Mare | 1,054.42 mi (1,696.93 km) |
| Rennes to Santana | 1,090.11 mi (1,754.37 km) |
| Rennes to Satu Mare | 1,132.33 mi (1,822.31 km) |
| Rennes to Scobinti | 1,322.54 mi (2,128.43 km) |
| Rennes to Scornicesti | 1,268.34 mi (2,041.20 km) |
| Rennes to Sebes | 1,192.78 mi (1,919.59 km) |
| Rennes to Seini | 1,150.91 mi (1,852.21 km) |
| Rennes to Sfantu-Gheorghe | 1,296.85 mi (2,087.07 km) |
| Rennes to Sibiu | 1,222.91 mi (1,968.08 km) |
| Rennes to Sighetu Marmatiei | 1,176.36 mi (1,893.17 km) |
| Rennes to Sighisoara | 1,244.13 mi (2,002.23 km) |
| Rennes to Simeria | 1,169.12 mi (1,881.51 km) |
| Rennes to Sinaia | 1,296.67 mi (2,086.80 km) |
| Rennes to Slatina | 1,263.20 mi (2,032.92 km) |
