| Rennes to Smolyan | 1,360.69 mi (2,189.81 km) |
| Rennes to Sofia | 1,263.05 mi (2,032.69 km) |
| Rennes to Sopot | 1,329.53 mi (2,139.68 km) |
| Rennes to Sozopol | 1,471.94 mi (2,368.85 km) |
| Rennes to Sredets | 1,450.96 mi (2,335.09 km) |
| Rennes to Stamboliyski | 1,335.44 mi (2,149.19 km) |
| Rennes to Stara Zagora | 1,377.30 mi (2,216.55 km) |
| Rennes to Svilengrad | 1,423.19 mi (2,290.40 km) |
| Rennes to Svishtov | 1,329.61 mi (2,139.81 km) |
| Rennes to Targovishte | 1,396.46 mi (2,247.39 km) |
| Rennes to Teteven | 1,299.50 mi (2,091.34 km) |
| Rennes to Troyan | 1,321.11 mi (2,126.12 km) |
| Rennes to Tryavna | 1,357.55 mi (2,184.76 km) |
| Rennes to Tutrakan | 1,376.60 mi (2,215.43 km) |
| Rennes to Varna | 1,458.83 mi (2,347.75 km) |
