| Hardinxveld-Giessendam to Smolyan | 1,170.95 mi (1,884.45 km) |
| Hardinxveld-Giessendam to Sofia | 1,066.96 mi (1,717.11 km) |
| Hardinxveld-Giessendam to Sopot | 1,122.98 mi (1,807.27 km) |
| Hardinxveld-Giessendam to Sozopol | 1,248.16 mi (2,008.72 km) |
| Hardinxveld-Giessendam to Sredets | 1,231.40 mi (1,981.75 km) |
| Hardinxveld-Giessendam to Stamboliyski | 1,138.64 mi (1,832.46 km) |
| Hardinxveld-Giessendam to Stara Zagora | 1,167.37 mi (1,878.70 km) |
| Hardinxveld-Giessendam to Svilengrad | 1,218.99 mi (1,961.78 km) |
| Hardinxveld-Giessendam to Svishtov | 1,103.67 mi (1,776.18 km) |
| Hardinxveld-Giessendam to Targovishte | 1,168.02 mi (1,879.74 km) |
| Hardinxveld-Giessendam to Teteven | 1,092.40 mi (1,758.05 km) |
| Hardinxveld-Giessendam to Troyan | 1,111.15 mi (1,788.22 km) |
| Hardinxveld-Giessendam to Tryavna | 1,142.14 mi (1,838.10 km) |
| Hardinxveld-Giessendam to Tutrakan | 1,136.12 mi (1,828.42 km) |
| Hardinxveld-Giessendam to Varna | 1,222.63 mi (1,967.63 km) |
