| Flat Rock to Popovo | 5,094.69 mi (8,199.10 km) |
| Flat Rock to Provadia | 5,146.36 mi (8,282.27 km) |
| Flat Rock to Radnevo | 5,133.34 mi (8,261.31 km) |
| Flat Rock to Radomir | 5,009.46 mi (8,061.94 km) |
| Flat Rock to Rakitovo | 5,078.71 mi (8,173.40 km) |
| Flat Rock to Rakovski | 5,097.73 mi (8,204.00 km) |
| Flat Rock to Razgrad | 5,096.35 mi (8,201.78 km) |
| Flat Rock to Razlog | 5,059.89 mi (8,143.11 km) |
| Flat Rock to Ruse | 5,062.14 mi (8,146.72 km) |
| Flat Rock to Samokov | 5,042.26 mi (8,114.74 km) |
| Flat Rock to Sandanski | 5,067.43 mi (8,155.24 km) |
| Flat Rock to Sevlievo | 5,068.68 mi (8,157.24 km) |
| Flat Rock to Shumen | 5,123.41 mi (8,245.33 km) |
| Flat Rock to Silistra | 5,095.49 mi (8,200.39 km) |
| Flat Rock to Sliven | 5,129.97 mi (8,255.89 km) |
