| Hardinxveld-Giessendam to Popovo | 1,149.90 mi (1,850.58 km) |
| Hardinxveld-Giessendam to Provadia | 1,204.67 mi (1,938.72 km) |
| Hardinxveld-Giessendam to Radnevo | 1,184.33 mi (1,906.00 km) |
| Hardinxveld-Giessendam to Radomir | 1,059.89 mi (1,705.73 km) |
| Hardinxveld-Giessendam to Rakitovo | 1,128.88 mi (1,816.76 km) |
| Hardinxveld-Giessendam to Rakovski | 1,147.78 mi (1,847.17 km) |
| Hardinxveld-Giessendam to Razgrad | 1,153.41 mi (1,856.23 km) |
| Hardinxveld-Giessendam to Razlog | 1,110.90 mi (1,787.82 km) |
| Hardinxveld-Giessendam to Ruse | 1,118.90 mi (1,800.69 km) |
| Hardinxveld-Giessendam to Samokov | 1,092.44 mi (1,758.11 km) |
| Hardinxveld-Giessendam to Sandanski | 1,119.58 mi (1,801.78 km) |
| Hardinxveld-Giessendam to Sevlievo | 1,120.11 mi (1,802.64 km) |
| Hardinxveld-Giessendam to Shumen | 1,180.51 mi (1,899.85 km) |
| Hardinxveld-Giessendam to Silistra | 1,159.43 mi (1,865.92 km) |
| Hardinxveld-Giessendam to Sliven | 1,182.73 mi (1,903.43 km) |
