| Troon to Popovo | 1,603.55 mi (2,580.66 km) |
| Troon to Provadia | 1,655.91 mi (2,664.93 km) |
| Troon to Radnevo | 1,642.42 mi (2,643.21 km) |
| Troon to Radomir | 1,522.62 mi (2,450.42 km) |
| Troon to Rakitovo | 1,591.09 mi (2,560.61 km) |
| Troon to Rakovski | 1,607.80 mi (2,587.50 km) |
| Troon to Razgrad | 1,605.55 mi (2,583.88 km) |
| Troon to Razlog | 1,574.14 mi (2,533.33 km) |
| Troon to Ruse | 1,571.24 mi (2,528.67 km) |
| Troon to Samokov | 1,554.72 mi (2,502.07 km) |
| Troon to Sandanski | 1,583.49 mi (2,548.39 km) |
| Troon to Sevlievo | 1,577.62 mi (2,538.93 km) |
| Troon to Shumen | 1,632.64 mi (2,627.48 km) |
| Troon to Silistra | 1,606.69 mi (2,585.71 km) |
| Troon to Sliven | 1,638.68 mi (2,637.21 km) |
