| Flint to Popovo | 1,498.66 mi (2,411.86 km) |
| Flint to Provadia | 1,553.64 mi (2,500.34 km) |
| Flint to Radnevo | 1,531.97 mi (2,465.46 km) |
| Flint to Radomir | 1,404.55 mi (2,260.40 km) |
| Flint to Rakitovo | 1,473.97 mi (2,372.13 km) |
| Flint to Rakovski | 1,494.52 mi (2,405.20 km) |
| Flint to Razgrad | 1,502.33 mi (2,417.77 km) |
| Flint to Razlog | 1,454.81 mi (2,341.28 km) |
| Flint to Ruse | 1,467.82 mi (2,362.22 km) |
| Flint to Samokov | 1,437.53 mi (2,313.48 km) |
| Flint to Sandanski | 1,462.37 mi (2,353.45 km) |
| Flint to Sevlievo | 1,468.01 mi (2,362.54 km) |
| Flint to Shumen | 1,529.43 mi (2,461.38 km) |
| Flint to Silistra | 1,508.40 mi (2,427.54 km) |
| Flint to Sliven | 1,531.05 mi (2,463.98 km) |
