| Retie to Provadia | 1,182.20 mi (1,902.56 km) |
| Retie to Radnevo | 1,159.31 mi (1,865.72 km) |
| Retie to Radomir | 1,032.52 mi (1,661.68 km) |
| Retie to Rakitovo | 1,101.79 mi (1,773.16 km) |
| Retie to Rakovski | 1,121.89 mi (1,805.50 km) |
| Retie to Razgrad | 1,130.71 mi (1,819.70 km) |
| Retie to Razlog | 1,083.12 mi (1,743.11 km) |
| Retie to Ruse | 1,096.19 mi (1,764.14 km) |
| Retie to Samokov | 1,065.34 mi (1,714.50 km) |
| Retie to Sandanski | 1,091.23 mi (1,756.17 km) |
| Retie to Sevlievo | 1,095.41 mi (1,762.89 km) |
| Retie to Shumen | 1,157.78 mi (1,863.26 km) |
| Retie to Silistra | 1,138.31 mi (1,831.93 km) |
| Retie to Sliven | 1,158.60 mi (1,864.58 km) |
| Retie to Smolyan | 1,143.89 mi (1,840.92 km) |
