| Fort Thomas to Popovo | 5,286.02 mi (8,507.02 km) |
| Fort Thomas to Provadia | 5,338.57 mi (8,591.60 km) |
| Fort Thomas to Radnevo | 5,322.92 mi (8,566.41 km) |
| Fort Thomas to Radomir | 5,196.52 mi (8,362.99 km) |
| Fort Thomas to Rakitovo | 5,266.03 mi (8,474.86 km) |
| Fort Thomas to Rakovski | 5,286.36 mi (8,507.57 km) |
| Fort Thomas to Razgrad | 5,288.19 mi (8,510.52 km) |
| Fort Thomas to Razlog | 5,246.45 mi (8,443.34 km) |
| Fort Thomas to Ruse | 5,253.87 mi (8,455.28 km) |
| Fort Thomas to Samokov | 5,229.60 mi (8,416.22 km) |
| Fort Thomas to Sandanski | 5,253.32 mi (8,454.40 km) |
| Fort Thomas to Sevlievo | 5,258.51 mi (8,462.76 km) |
| Fort Thomas to Shumen | 5,315.29 mi (8,554.13 km) |
| Fort Thomas to Silistra | 5,288.78 mi (8,511.47 km) |
| Fort Thomas to Sliven | 5,320.47 mi (8,562.47 km) |
