| Echelon to Popovo | 4,882.30 mi (7,857.30 km) |
| Echelon to Provadia | 4,937.26 mi (7,945.75 km) |
| Echelon to Radnevo | 4,913.96 mi (7,908.25 km) |
| Echelon to Radomir | 4,781.22 mi (7,694.62 km) |
| Echelon to Rakitovo | 4,851.11 mi (7,807.11 km) |
| Echelon to Rakovski | 4,874.90 mi (7,845.40 km) |
| Echelon to Razgrad | 4,886.00 mi (7,863.25 km) |
| Echelon to Razlog | 4,829.61 mi (7,772.50 km) |
| Echelon to Ruse | 4,851.49 mi (7,807.71 km) |
| Echelon to Samokov | 4,814.86 mi (7,748.77 km) |
| Echelon to Sandanski | 4,834.73 mi (7,780.75 km) |
| Echelon to Sevlievo | 4,850.55 mi (7,806.20 km) |
| Echelon to Shumen | 4,913.10 mi (7,906.87 km) |
| Echelon to Silistra | 4,891.07 mi (7,871.42 km) |
| Echelon to Sliven | 4,914.16 mi (7,908.57 km) |
