| Humble to Popovo | 6,162.63 mi (9,917.80 km) |
| Humble to Provadia | 6,214.76 mi (10,001.68 km) |
| Humble to Radnevo | 6,200.21 mi (9,978.27 km) |
| Humble to Radomir | 6,074.36 mi (9,775.73 km) |
| Humble to Rakitovo | 6,143.84 mi (9,887.55 km) |
| Humble to Rakovski | 6,163.91 mi (9,919.86 km) |
| Humble to Razgrad | 6,164.56 mi (9,920.91 km) |
| Humble to Razlog | 6,124.34 mi (9,856.18 km) |
| Humble to Ruse | 6,130.29 mi (9,865.75 km) |
| Humble to Samokov | 6,107.40 mi (9,828.90 km) |
| Humble to Sandanski | 6,131.26 mi (9,867.31 km) |
| Humble to Sevlievo | 6,135.72 mi (9,874.48 km) |
| Humble to Shumen | 6,191.65 mi (9,964.49 km) |
| Humble to Silistra | 6,164.33 mi (9,920.53 km) |
| Humble to Sliven | 6,197.44 mi (9,973.82 km) |
