| Bishopbriggs to Popovo | 1,595.92 mi (2,568.38 km) |
| Bishopbriggs to Provadia | 1,647.67 mi (2,651.67 km) |
| Bishopbriggs to Radnevo | 1,635.96 mi (2,632.83 km) |
| Bishopbriggs to Radomir | 1,518.04 mi (2,443.05 km) |
| Bishopbriggs to Rakitovo | 1,586.21 mi (2,552.77 km) |
| Bishopbriggs to Rakovski | 1,602.02 mi (2,578.20 km) |
| Bishopbriggs to Razgrad | 1,597.56 mi (2,571.02 km) |
| Bishopbriggs to Razlog | 1,569.80 mi (2,526.36 km) |
| Bishopbriggs to Ruse | 1,563.34 mi (2,515.95 km) |
| Bishopbriggs to Samokov | 1,549.89 mi (2,494.31 km) |
| Bishopbriggs to Sandanski | 1,579.59 mi (2,542.10 km) |
| Bishopbriggs to Sevlievo | 1,571.04 mi (2,528.35 km) |
| Bishopbriggs to Shumen | 1,624.62 mi (2,614.58 km) |
| Bishopbriggs to Silistra | 1,597.67 mi (2,571.21 km) |
| Bishopbriggs to Sliven | 1,631.61 mi (2,625.83 km) |
