| Corby to Popovo | 1,386.67 mi (2,231.64 km) |
| Corby to Provadia | 1,442.10 mi (2,320.84 km) |
| Corby to Radnevo | 1,419.03 mi (2,283.71 km) |
| Corby to Radomir | 1,290.74 mi (2,077.24 km) |
| Corby to Rakitovo | 1,360.23 mi (2,189.08 km) |
| Corby to Rakovski | 1,381.21 mi (2,222.84 km) |
| Corby to Razgrad | 1,390.66 mi (2,238.04 km) |
| Corby to Razlog | 1,340.87 mi (2,157.92 km) |
| Corby to Ruse | 1,356.13 mi (2,182.49 km) |
| Corby to Samokov | 1,323.79 mi (2,130.44 km) |
| Corby to Sandanski | 1,348.29 mi (2,169.86 km) |
| Corby to Sevlievo | 1,355.25 mi (2,181.06 km) |
| Corby to Shumen | 1,417.73 mi (2,281.62 km) |
| Corby to Silistra | 1,397.75 mi (2,249.46 km) |
| Corby to Sliven | 1,418.55 mi (2,282.94 km) |
