| Mountain Brook to Popovo | 5,654.17 mi (9,099.51 km) |
| Mountain Brook to Provadia | 5,708.08 mi (9,186.27 km) |
| Mountain Brook to Radnevo | 5,688.12 mi (9,154.15 km) |
| Mountain Brook to Radomir | 5,557.79 mi (8,944.40 km) |
| Mountain Brook to Rakitovo | 5,627.59 mi (9,056.73 km) |
| Mountain Brook to Rakovski | 5,650.06 mi (9,092.89 km) |
| Mountain Brook to Razgrad | 5,657.19 mi (9,104.36 km) |
| Mountain Brook to Razlog | 5,606.78 mi (9,023.24 km) |
| Mountain Brook to Ruse | 5,622.73 mi (9,048.91 km) |
| Mountain Brook to Samokov | 5,591.24 mi (8,998.24 km) |
| Mountain Brook to Sandanski | 5,612.53 mi (9,032.49 km) |
| Mountain Brook to Sevlievo | 5,624.25 mi (9,051.35 km) |
| Mountain Brook to Shumen | 5,684.31 mi (9,148.01 km) |
| Mountain Brook to Silistra | 5,660.15 mi (9,109.13 km) |
| Mountain Brook to Sliven | 5,687.20 mi (9,152.67 km) |
