| Idil to Popovo | 921.27 mi (1,482.64 km) |
| Idil to Provadia | 861.03 mi (1,385.70 km) |
| Idil to Radnevo | 911.87 mi (1,467.51 km) |
| Idil to Radomir | 1,063.27 mi (1,711.17 km) |
| Idil to Rakitovo | 997.94 mi (1,606.02 km) |
| Idil to Rakovski | 959.20 mi (1,543.68 km) |
| Idil to Razgrad | 912.86 mi (1,469.10 km) |
| Idil to Razlog | 1,027.44 mi (1,653.50 km) |
| Idil to Ruse | 946.54 mi (1,523.30 km) |
| Idil to Samokov | 1,029.83 mi (1,657.35 km) |
| Idil to Sandanski | 1,032.62 mi (1,661.84 km) |
| Idil to Sevlievo | 966.71 mi (1,555.76 km) |
| Idil to Shumen | 886.91 mi (1,427.35 km) |
| Idil to Silistra | 895.92 mi (1,441.85 km) |
| Idil to Sliven | 900.60 mi (1,449.37 km) |
