| Petrel to Popovo | 1,444.02 mi (2,323.92 km) |
| Petrel to Provadia | 1,503.57 mi (2,419.76 km) |
| Petrel to Radnevo | 1,425.10 mi (2,293.47 km) |
| Petrel to Radomir | 1,274.15 mi (2,050.55 km) |
| Petrel to Rakitovo | 1,329.64 mi (2,139.84 km) |
| Petrel to Rakovski | 1,375.64 mi (2,213.88 km) |
| Petrel to Razgrad | 1,459.15 mi (2,348.28 km) |
| Petrel to Razlog | 1,297.69 mi (2,088.44 km) |
| Petrel to Ruse | 1,432.91 mi (2,306.04 km) |
| Petrel to Samokov | 1,303.87 mi (2,098.37 km) |
| Petrel to Sandanski | 1,287.45 mi (2,071.95 km) |
| Petrel to Sevlievo | 1,386.09 mi (2,230.70 km) |
| Petrel to Shumen | 1,478.82 mi (2,379.93 km) |
| Petrel to Silistra | 1,499.54 mi (2,413.27 km) |
| Petrel to Sliven | 1,446.41 mi (2,327.77 km) |
