| Unna to Popovo | 1,030.23 mi (1,657.99 km) |
| Unna to Provadia | 1,084.21 mi (1,744.86 km) |
| Unna to Radnevo | 1,066.78 mi (1,716.82 km) |
| Unna to Radomir | 946.22 mi (1,522.79 km) |
| Unna to Rakitovo | 1,014.59 mi (1,632.82 km) |
| Unna to Rakovski | 1,031.51 mi (1,660.05 km) |
| Unna to Razgrad | 1,033.20 mi (1,662.77 km) |
| Unna to Razlog | 997.89 mi (1,605.96 km) |
| Unna to Ruse | 998.73 mi (1,607.30 km) |
| Unna to Samokov | 978.22 mi (1,574.30 km) |
| Unna to Sandanski | 1,007.66 mi (1,621.67 km) |
| Unna to Sevlievo | 1,002.20 mi (1,612.89 km) |
| Unna to Shumen | 1,060.32 mi (1,706.42 km) |
| Unna to Silistra | 1,037.86 mi (1,670.28 km) |
| Unna to Sliven | 1,064.06 mi (1,712.44 km) |
