| Bluffton to Popovo | 5,484.36 mi (8,826.22 km) |
| Bluffton to Provadia | 5,540.40 mi (8,916.42 km) |
| Bluffton to Radnevo | 5,513.11 mi (8,872.49 km) |
| Bluffton to Radomir | 5,376.99 mi (8,653.43 km) |
| Bluffton to Rakitovo | 5,446.92 mi (8,765.97 km) |
| Bluffton to Rakovski | 5,472.73 mi (8,807.50 km) |
| Bluffton to Razgrad | 5,488.83 mi (8,833.41 km) |
| Bluffton to Razlog | 5,424.27 mi (8,729.52 km) |
| Bluffton to Ruse | 5,454.31 mi (8,777.86 km) |
| Bluffton to Samokov | 5,410.89 mi (8,707.98 km) |
| Bluffton to Sandanski | 5,428.25 mi (8,735.92 km) |
| Bluffton to Sevlievo | 5,450.43 mi (8,771.61 km) |
| Bluffton to Shumen | 5,515.86 mi (8,876.92 km) |
| Bluffton to Silistra | 5,496.07 mi (8,845.06 km) |
| Bluffton to Sliven | 5,514.77 mi (8,875.16 km) |
