| Radstock to Popovo | 1,439.52 mi (2,316.68 km) |
| Radstock to Provadia | 1,496.65 mi (2,408.63 km) |
| Radstock to Radnevo | 1,467.07 mi (2,361.02 km) |
| Radstock to Radomir | 1,332.85 mi (2,145.01 km) |
| Radstock to Rakitovo | 1,402.74 mi (2,257.49 km) |
| Radstock to Rakovski | 1,427.04 mi (2,296.60 km) |
| Radstock to Razgrad | 1,444.80 mi (2,325.18 km) |
| Radstock to Razlog | 1,381.44 mi (2,223.21 km) |
| Radstock to Ruse | 1,410.35 mi (2,269.74 km) |
| Radstock to Samokov | 1,366.49 mi (2,199.15 km) |
| Radstock to Sandanski | 1,387.08 mi (2,232.30 km) |
| Radstock to Sevlievo | 1,404.42 mi (2,260.20 km) |
| Radstock to Shumen | 1,471.70 mi (2,368.47 km) |
| Radstock to Silistra | 1,455.62 mi (2,342.60 km) |
| Radstock to Sliven | 1,468.95 mi (2,364.04 km) |
