| Gembloux to Provadia | 1,183.08 mi (1,903.98 km) |
| Gembloux to Radnevo | 1,156.00 mi (1,860.40 km) |
| Gembloux to Radomir | 1,025.30 mi (1,650.07 km) |
| Gembloux to Rakitovo | 1,094.96 mi (1,762.16 km) |
| Gembloux to Rakovski | 1,117.15 mi (1,797.88 km) |
| Gembloux to Razgrad | 1,131.31 mi (1,820.67 km) |
| Gembloux to Razlog | 1,075.06 mi (1,730.14 km) |
| Gembloux to Ruse | 1,096.82 mi (1,765.17 km) |
| Gembloux to Samokov | 1,058.55 mi (1,703.58 km) |
| Gembloux to Sandanski | 1,082.11 mi (1,741.48 km) |
| Gembloux to Sevlievo | 1,092.76 mi (1,758.63 km) |
| Gembloux to Shumen | 1,158.27 mi (1,864.06 km) |
| Gembloux to Silistra | 1,141.37 mi (1,836.86 km) |
| Gembloux to Sliven | 1,156.79 mi (1,861.67 km) |
| Gembloux to Smolyan | 1,137.05 mi (1,829.91 km) |
