| Defiance to Popovo | 5,174.55 mi (8,327.64 km) |
| Defiance to Provadia | 5,226.23 mi (8,410.81 km) |
| Defiance to Radnevo | 5,213.19 mi (8,389.82 km) |
| Defiance to Radomir | 5,089.25 mi (8,190.36 km) |
| Defiance to Rakitovo | 5,158.52 mi (8,301.83 km) |
| Defiance to Rakovski | 5,177.57 mi (8,332.49 km) |
| Defiance to Razgrad | 5,176.22 mi (8,330.32 km) |
| Defiance to Razlog | 5,139.67 mi (8,271.50 km) |
| Defiance to Ruse | 5,142.01 mi (8,275.26 km) |
| Defiance to Samokov | 5,122.07 mi (8,243.17 km) |
| Defiance to Sandanski | 5,147.18 mi (8,283.59 km) |
| Defiance to Sevlievo | 5,148.53 mi (8,285.76 km) |
| Defiance to Shumen | 5,203.28 mi (8,373.87 km) |
| Defiance to Silistra | 5,175.35 mi (8,328.91 km) |
| Defiance to Sliven | 5,209.83 mi (8,384.42 km) |
