| Grenoble to Smolyan | 982.22 mi (1,580.73 km) |
| Grenoble to Sofia | 890.67 mi (1,433.40 km) |
| Grenoble to Sopot | 960.66 mi (1,546.03 km) |
| Grenoble to Sozopol | 1,108.92 mi (1,784.64 km) |
| Grenoble to Sredets | 1,085.98 mi (1,747.71 km) |
| Grenoble to Stamboliyski | 961.16 mi (1,546.84 km) |
| Grenoble to Stara Zagora | 1,008.85 mi (1,623.59 km) |
| Grenoble to Svilengrad | 1,050.35 mi (1,690.38 km) |
| Grenoble to Svishtov | 972.52 mi (1,565.13 km) |
| Grenoble to Targovishte | 1,038.67 mi (1,671.58 km) |
| Grenoble to Teteven | 931.93 mi (1,499.80 km) |
| Grenoble to Troyan | 954.46 mi (1,536.05 km) |
| Grenoble to Tryavna | 992.89 mi (1,597.90 km) |
| Grenoble to Tutrakan | 1,027.77 mi (1,654.03 km) |
| Grenoble to Varna | 1,104.20 mi (1,777.04 km) |
