| Prestonpans to Popovo | 1,551.57 mi (2,497.01 km) |
| Prestonpans to Provadia | 1,602.89 mi (2,579.60 km) |
| Prestonpans to Radnevo | 1,592.49 mi (2,562.87 km) |
| Prestonpans to Radomir | 1,476.14 mi (2,375.62 km) |
| Prestonpans to Rakitovo | 1,544.04 mi (2,484.90 km) |
| Prestonpans to Rakovski | 1,559.09 mi (2,509.11 km) |
| Prestonpans to Razgrad | 1,552.96 mi (2,499.24 km) |
| Prestonpans to Razlog | 1,528.11 mi (2,459.25 km) |
| Prestonpans to Ruse | 1,518.80 mi (2,444.27 km) |
| Prestonpans to Samokov | 1,507.78 mi (2,426.53 km) |
| Prestonpans to Sandanski | 1,538.26 mi (2,475.59 km) |
| Prestonpans to Sevlievo | 1,527.49 mi (2,458.26 km) |
| Prestonpans to Shumen | 1,580.00 mi (2,542.76 km) |
| Prestonpans to Silistra | 1,552.37 mi (2,498.30 km) |
| Prestonpans to Sliven | 1,587.67 mi (2,555.11 km) |
