| Preston to Popovo | 1,491.20 mi (2,399.86 km) |
| Preston to Provadia | 1,545.45 mi (2,487.15 km) |
| Preston to Radnevo | 1,526.25 mi (2,456.26 km) |
| Preston to Radomir | 1,401.21 mi (2,255.03 km) |
| Preston to Rakitovo | 1,470.37 mi (2,366.33 km) |
| Preston to Rakovski | 1,489.68 mi (2,397.40 km) |
| Preston to Razgrad | 1,494.38 mi (2,404.96 km) |
| Preston to Razlog | 1,451.94 mi (2,336.67 km) |
| Preston to Ruse | 1,459.90 mi (2,349.47 km) |
| Preston to Samokov | 1,433.92 mi (2,307.67 km) |
| Preston to Sandanski | 1,460.12 mi (2,349.83 km) |
| Preston to Sevlievo | 1,461.98 mi (2,352.83 km) |
| Preston to Shumen | 1,521.49 mi (2,448.61 km) |
| Preston to Silistra | 1,499.01 mi (2,412.42 km) |
| Preston to Sliven | 1,524.45 mi (2,453.37 km) |
