| Theux to Provadia | 1,135.09 mi (1,826.75 km) |
| Theux to Radnevo | 1,109.24 mi (1,785.15 km) |
| Theux to Radomir | 979.97 mi (1,577.11 km) |
| Theux to Rakitovo | 1,049.48 mi (1,688.98 km) |
| Theux to Rakovski | 1,070.88 mi (1,723.41 km) |
| Theux to Razgrad | 1,083.38 mi (1,743.54 km) |
| Theux to Razlog | 1,030.09 mi (1,657.77 km) |
| Theux to Ruse | 1,048.88 mi (1,688.01 km) |
| Theux to Samokov | 1,013.05 mi (1,630.35 km) |
| Theux to Sandanski | 1,037.61 mi (1,669.87 km) |
| Theux to Sevlievo | 1,045.77 mi (1,683.01 km) |
| Theux to Shumen | 1,110.38 mi (1,786.98 km) |
| Theux to Silistra | 1,092.87 mi (1,758.80 km) |
| Theux to Sliven | 1,109.55 mi (1,785.64 km) |
| Theux to Smolyan | 1,091.59 mi (1,756.75 km) |
