| Preakness to Popovo | 4,802.48 mi (7,728.85 km) |
| Preakness to Provadia | 4,857.21 mi (7,816.93 km) |
| Preakness to Radnevo | 4,834.71 mi (7,780.71 km) |
| Preakness to Radomir | 4,702.65 mi (7,568.18 km) |
| Preakness to Rakitovo | 4,772.52 mi (7,680.63 km) |
| Preakness to Rakovski | 4,795.92 mi (7,718.29 km) |
| Preakness to Razgrad | 4,806.03 mi (7,734.55 km) |
| Preakness to Razlog | 4,751.24 mi (7,646.38 km) |
| Preakness to Ruse | 4,771.52 mi (7,679.03 km) |
| Preakness to Samokov | 4,736.24 mi (7,622.24 km) |
| Preakness to Sandanski | 4,756.58 mi (7,654.98 km) |
| Preakness to Sevlievo | 4,771.17 mi (7,678.45 km) |
| Preakness to Shumen | 4,833.14 mi (7,778.18 km) |
| Preakness to Silistra | 4,810.66 mi (7,742.02 km) |
| Preakness to Sliven | 4,834.62 mi (7,780.57 km) |
