| Derry to Popovo | 1,694.06 mi (2,726.32 km) |
| Derry to Provadia | 1,747.67 mi (2,812.60 km) |
| Derry to Radnevo | 1,730.24 mi (2,784.55 km) |
| Derry to Radomir | 1,606.20 mi (2,584.93 km) |
| Derry to Rakitovo | 1,675.27 mi (2,696.09 km) |
| Derry to Rakovski | 1,694.11 mi (2,726.41 km) |
| Derry to Razgrad | 1,696.83 mi (2,730.78 km) |
| Derry to Razlog | 1,657.03 mi (2,666.73 km) |
| Derry to Ruse | 1,662.40 mi (2,675.37 km) |
| Derry to Samokov | 1,638.83 mi (2,637.44 km) |
| Derry to Sandanski | 1,665.32 mi (2,680.07 km) |
| Derry to Sevlievo | 1,665.81 mi (2,680.86 km) |
| Derry to Shumen | 1,723.95 mi (2,774.43 km) |
| Derry to Silistra | 1,700.14 mi (2,736.11 km) |
| Derry to Sliven | 1,727.91 mi (2,780.80 km) |
