| Westerlo to Provadia | 1,184.21 mi (1,905.80 km) |
| Westerlo to Radnevo | 1,160.15 mi (1,867.09 km) |
| Westerlo to Radomir | 1,032.25 mi (1,661.25 km) |
| Westerlo to Rakitovo | 1,101.64 mi (1,772.92 km) |
| Westerlo to Rakovski | 1,122.33 mi (1,806.21 km) |
| Westerlo to Razgrad | 1,132.63 mi (1,822.80 km) |
| Westerlo to Razlog | 1,082.62 mi (1,742.31 km) |
| Westerlo to Ruse | 1,098.11 mi (1,767.24 km) |
| Westerlo to Samokov | 1,065.20 mi (1,714.27 km) |
| Westerlo to Sandanski | 1,090.44 mi (1,754.89 km) |
| Westerlo to Sevlievo | 1,096.43 mi (1,764.53 km) |
| Westerlo to Shumen | 1,159.68 mi (1,866.32 km) |
| Westerlo to Silistra | 1,140.91 mi (1,836.12 km) |
| Westerlo to Sliven | 1,159.86 mi (1,866.61 km) |
| Westerlo to Smolyan | 1,143.75 mi (1,840.69 km) |
