| Kerrville to Popovo | 6,300.37 mi (10,139.47 km) |
| Kerrville to Provadia | 6,350.91 mi (10,220.80 km) |
| Kerrville to Radnevo | 6,340.89 mi (10,204.68 km) |
| Kerrville to Radomir | 6,219.18 mi (10,008.80 km) |
| Kerrville to Rakitovo | 6,288.22 mi (10,119.92 km) |
| Kerrville to Rakovski | 6,306.19 mi (10,148.83 km) |
| Kerrville to Razgrad | 6,301.41 mi (10,141.14 km) |
| Kerrville to Razlog | 6,269.93 mi (10,090.48 km) |
| Kerrville to Ruse | 6,267.38 mi (10,086.37 km) |
| Kerrville to Samokov | 6,251.78 mi (10,061.27 km) |
| Kerrville to Sandanski | 6,277.87 mi (10,103.26 km) |
| Kerrville to Sevlievo | 6,276.03 mi (10,100.29 km) |
| Kerrville to Shumen | 6,328.39 mi (10,184.56 km) |
| Kerrville to Silistra | 6,298.58 mi (10,136.59 km) |
| Kerrville to Sliven | 6,336.58 mi (10,197.73 km) |
