| Bolbec to Popovo | 1,291.64 mi (2,078.69 km) |
| Bolbec to Provadia | 1,350.21 mi (2,172.95 km) |
| Bolbec to Radnevo | 1,314.54 mi (2,115.55 km) |
| Bolbec to Radomir | 1,175.93 mi (1,892.48 km) |
| Bolbec to Rakitovo | 1,245.84 mi (2,004.99 km) |
| Bolbec to Rakovski | 1,272.77 mi (2,048.32 km) |
| Bolbec to Razgrad | 1,298.20 mi (2,089.25 km) |
| Bolbec to Razlog | 1,223.13 mi (1,968.44 km) |
| Bolbec to Ruse | 1,264.00 mi (2,034.21 km) |
| Bolbec to Samokov | 1,209.89 mi (1,947.13 km) |
| Bolbec to Sandanski | 1,227.45 mi (1,975.39 km) |
| Bolbec to Sevlievo | 1,253.21 mi (2,016.85 km) |
| Bolbec to Shumen | 1,324.78 mi (2,132.03 km) |
| Bolbec to Silistra | 1,312.92 mi (2,112.93 km) |
| Bolbec to Sliven | 1,318.57 mi (2,122.03 km) |
