| Prestwick to Popovo | 1,600.87 mi (2,576.35 km) |
| Prestwick to Provadia | 1,653.28 mi (2,660.70 km) |
| Prestwick to Radnevo | 1,639.65 mi (2,638.76 km) |
| Prestwick to Radomir | 1,519.72 mi (2,445.75 km) |
| Prestwick to Rakitovo | 1,588.21 mi (2,555.97 km) |
| Prestwick to Rakovski | 1,604.98 mi (2,582.97 km) |
| Prestwick to Razgrad | 1,602.90 mi (2,579.61 km) |
| Prestwick to Razlog | 1,571.22 mi (2,528.63 km) |
| Prestwick to Ruse | 1,568.59 mi (2,524.40 km) |
| Prestwick to Samokov | 1,551.83 mi (2,497.43 km) |
| Prestwick to Sandanski | 1,580.55 mi (2,543.64 km) |
| Prestwick to Sevlievo | 1,574.86 mi (2,534.49 km) |
| Prestwick to Shumen | 1,629.99 mi (2,623.22 km) |
| Prestwick to Silistra | 1,604.12 mi (2,581.58 km) |
| Prestwick to Sliven | 1,635.96 mi (2,632.82 km) |
