| Keila to Popovo | 1,105.30 mi (1,778.81 km) |
| Keila to Provadia | 1,121.45 mi (1,804.80 km) |
| Keila to Radnevo | 1,176.96 mi (1,894.13 km) |
| Keila to Radomir | 1,159.61 mi (1,866.21 km) |
| Keila to Rakitovo | 1,197.15 mi (1,926.63 km) |
| Keila to Rakovski | 1,176.21 mi (1,892.93 km) |
| Keila to Razgrad | 1,093.56 mi (1,759.92 km) |
| Keila to Razlog | 1,204.67 mi (1,938.73 km) |
| Keila to Ruse | 1,071.89 mi (1,725.04 km) |
| Keila to Samokov | 1,173.20 mi (1,888.09 km) |
| Keila to Sandanski | 1,226.73 mi (1,974.23 km) |
| Keila to Sevlievo | 1,125.43 mi (1,811.20 km) |
| Keila to Shumen | 1,112.34 mi (1,790.15 km) |
| Keila to Silistra | 1,056.39 mi (1,700.10 km) |
| Keila to Sliven | 1,151.58 mi (1,853.29 km) |
