| Middlesex to Popovo | 4,829.80 mi (7,772.81 km) |
| Middlesex to Provadia | 4,884.60 mi (7,861.01 km) |
| Middlesex to Radnevo | 4,861.85 mi (7,824.38 km) |
| Middlesex to Radomir | 4,729.57 mi (7,611.50 km) |
| Middlesex to Rakitovo | 4,799.45 mi (7,723.97 km) |
| Middlesex to Rakovski | 4,822.97 mi (7,761.83 km) |
| Middlesex to Razgrad | 4,833.39 mi (7,778.60 km) |
| Middlesex to Razlog | 4,778.10 mi (7,689.60 km) |
| Middlesex to Ruse | 4,798.89 mi (7,723.07 km) |
| Middlesex to Samokov | 4,763.17 mi (7,665.59 km) |
| Middlesex to Sandanski | 4,783.37 mi (7,698.08 km) |
| Middlesex to Sevlievo | 4,798.35 mi (7,722.20 km) |
| Middlesex to Shumen | 4,860.50 mi (7,822.22 km) |
| Middlesex to Silistra | 4,838.17 mi (7,786.28 km) |
| Middlesex to Sliven | 4,861.85 mi (7,824.39 km) |
