| Ulbroka to Popovo | 942.38 mi (1,516.61 km) |
| Ulbroka to Provadia | 959.99 mi (1,544.96 km) |
| Ulbroka to Radnevo | 1,013.68 mi (1,631.36 km) |
| Ulbroka to Radomir | 995.52 mi (1,602.14 km) |
| Ulbroka to Rakitovo | 1,032.98 mi (1,662.43 km) |
| Ulbroka to Rakovski | 1,012.31 mi (1,629.16 km) |
| Ulbroka to Razgrad | 930.97 mi (1,498.25 km) |
| Ulbroka to Razlog | 1,040.48 mi (1,674.50 km) |
| Ulbroka to Ruse | 908.74 mi (1,462.48 km) |
| Ulbroka to Samokov | 1,009.01 mi (1,623.85 km) |
| Ulbroka to Sandanski | 1,062.56 mi (1,710.03 km) |
| Ulbroka to Sevlievo | 961.62 mi (1,547.57 km) |
| Ulbroka to Shumen | 950.22 mi (1,529.24 km) |
| Ulbroka to Silistra | 894.89 mi (1,440.19 km) |
| Ulbroka to Sliven | 988.70 mi (1,591.16 km) |
