| Durham to Popovo | 1,471.05 mi (2,367.42 km) |
| Durham to Provadia | 1,523.61 mi (2,452.02 km) |
| Durham to Radnevo | 1,509.68 mi (2,429.59 km) |
| Durham to Radomir | 1,389.97 mi (2,236.95 km) |
| Durham to Rakitovo | 1,458.39 mi (2,347.06 km) |
| Durham to Rakovski | 1,475.03 mi (2,373.83 km) |
| Durham to Razgrad | 1,473.16 mi (2,370.82 km) |
| Durham to Razlog | 1,441.55 mi (2,319.94 km) |
| Durham to Ruse | 1,438.83 mi (2,315.58 km) |
| Durham to Samokov | 1,422.03 mi (2,288.53 km) |
| Durham to Sandanski | 1,451.02 mi (2,335.19 km) |
| Durham to Sevlievo | 1,444.90 mi (2,325.34 km) |
| Durham to Shumen | 1,500.26 mi (2,414.44 km) |
| Durham to Silistra | 1,474.76 mi (2,373.39 km) |
| Durham to Sliven | 1,506.04 mi (2,423.73 km) |
