| Broxbourne to Popovo | 1,345.09 mi (2,164.71 km) |
| Broxbourne to Provadia | 1,401.31 mi (2,255.18 km) |
| Broxbourne to Radnevo | 1,375.45 mi (2,213.57 km) |
| Broxbourne to Radomir | 1,244.79 mi (2,003.30 km) |
| Broxbourne to Rakitovo | 1,314.48 mi (2,115.45 km) |
| Broxbourne to Rakovski | 1,336.73 mi (2,151.26 km) |
| Broxbourne to Razgrad | 1,349.65 mi (2,172.05 km) |
| Broxbourne to Razlog | 1,294.40 mi (2,083.14 km) |
| Broxbourne to Ruse | 1,315.14 mi (2,116.51 km) |
| Broxbourne to Samokov | 1,278.09 mi (2,056.88 km) |
| Broxbourne to Sandanski | 1,301.21 mi (2,094.09 km) |
| Broxbourne to Sevlievo | 1,312.09 mi (2,111.60 km) |
| Broxbourne to Shumen | 1,376.66 mi (2,215.52 km) |
| Broxbourne to Silistra | 1,358.46 mi (2,186.23 km) |
| Broxbourne to Sliven | 1,375.94 mi (2,214.36 km) |
