| Millbrook to Popovo | 5,689.88 mi (9,156.97 km) |
| Millbrook to Provadia | 5,744.24 mi (9,244.46 km) |
| Millbrook to Radnevo | 5,722.78 mi (9,209.92 km) |
| Millbrook to Radomir | 5,591.18 mi (8,998.13 km) |
| Millbrook to Rakitovo | 5,661.04 mi (9,110.56 km) |
| Millbrook to Rakovski | 5,684.22 mi (9,147.86 km) |
| Millbrook to Razgrad | 5,693.18 mi (9,162.29 km) |
| Millbrook to Razlog | 5,639.83 mi (9,076.43 km) |
| Millbrook to Ruse | 5,658.70 mi (9,106.79 km) |
| Millbrook to Samokov | 5,624.74 mi (9,052.15 km) |
| Millbrook to Sandanski | 5,645.20 mi (9,085.08 km) |
| Millbrook to Sevlievo | 5,659.12 mi (9,107.47 km) |
| Millbrook to Shumen | 5,720.30 mi (9,205.93 km) |
| Millbrook to Silistra | 5,697.00 mi (9,168.44 km) |
| Millbrook to Sliven | 5,722.39 mi (9,209.29 km) |
