| Hilliard to Popovo | 5,190.62 mi (8,353.49 km) |
| Hilliard to Provadia | 5,243.19 mi (8,438.10 km) |
| Hilliard to Radnevo | 5,227.49 mi (8,412.83 km) |
| Hilliard to Radomir | 5,101.10 mi (8,209.43 km) |
| Hilliard to Rakitovo | 5,170.61 mi (8,321.29 km) |
| Hilliard to Rakovski | 5,190.93 mi (8,354.00 km) |
| Hilliard to Razgrad | 5,192.81 mi (8,357.01 km) |
| Hilliard to Razlog | 5,151.04 mi (8,289.79 km) |
| Hilliard to Ruse | 5,158.48 mi (8,301.77 km) |
| Hilliard to Samokov | 5,134.17 mi (8,262.65 km) |
| Hilliard to Sandanski | 5,157.92 mi (8,300.87 km) |
| Hilliard to Sevlievo | 5,163.09 mi (8,309.19 km) |
| Hilliard to Shumen | 5,219.91 mi (8,400.63 km) |
| Hilliard to Silistra | 5,193.44 mi (8,358.04 km) |
| Hilliard to Sliven | 5,225.05 mi (8,408.91 km) |
