| East Retford to Popovo | 1,413.38 mi (2,274.61 km) |
| East Retford to Provadia | 1,467.77 mi (2,362.15 km) |
| East Retford to Radnevo | 1,448.19 mi (2,330.63 km) |
| East Retford to Radomir | 1,323.09 mi (2,129.31 km) |
| East Retford to Rakitovo | 1,392.24 mi (2,240.59 km) |
| East Retford to Rakovski | 1,411.55 mi (2,271.68 km) |
| East Retford to Razgrad | 1,416.65 mi (2,279.87 km) |
| East Retford to Razlog | 1,373.84 mi (2,210.98 km) |
| East Retford to Ruse | 1,382.16 mi (2,224.37 km) |
| East Retford to Samokov | 1,355.79 mi (2,181.93 km) |
| East Retford to Sandanski | 1,382.07 mi (2,224.22 km) |
| East Retford to Sevlievo | 1,383.95 mi (2,227.25 km) |
| East Retford to Shumen | 1,443.76 mi (2,323.51 km) |
| East Retford to Silistra | 1,421.64 mi (2,287.92 km) |
| East Retford to Sliven | 1,446.49 mi (2,327.90 km) |
