| Tonbridge to Popovo | 1,323.09 mi (2,129.32 km) |
| Tonbridge to Provadia | 1,379.92 mi (2,220.77 km) |
| Tonbridge to Radnevo | 1,351.76 mi (2,175.44 km) |
| Tonbridge to Radomir | 1,219.15 mi (1,962.04 km) |
| Tonbridge to Rakitovo | 1,288.96 mi (2,074.39 km) |
| Tonbridge to Rakovski | 1,312.30 mi (2,111.94 km) |
| Tonbridge to Razgrad | 1,328.13 mi (2,137.41 km) |
| Tonbridge to Razlog | 1,268.28 mi (2,041.10 km) |
| Tonbridge to Ruse | 1,293.65 mi (2,081.93 km) |
| Tonbridge to Samokov | 1,252.63 mi (2,015.92 km) |
| Tonbridge to Sandanski | 1,274.53 mi (2,051.16 km) |
| Tonbridge to Sevlievo | 1,288.80 mi (2,074.12 km) |
| Tonbridge to Shumen | 1,355.07 mi (2,180.77 km) |
| Tonbridge to Silistra | 1,338.34 mi (2,153.85 km) |
| Tonbridge to Sliven | 1,353.06 mi (2,177.55 km) |
