| Lockhart to Popovo | 6,257.41 mi (10,070.33 km) |
| Lockhart to Provadia | 6,308.61 mi (10,152.72 km) |
| Lockhart to Radnevo | 6,296.73 mi (10,133.61 km) |
| Lockhart to Radomir | 6,173.28 mi (9,934.94 km) |
| Lockhart to Rakitovo | 6,242.52 mi (10,046.37 km) |
| Lockhart to Rakovski | 6,261.36 mi (10,076.69 km) |
| Lockhart to Razgrad | 6,258.81 mi (10,072.59 km) |
| Lockhart to Razlog | 6,223.73 mi (10,016.13 km) |
| Lockhart to Ruse | 6,224.67 mi (10,017.64 km) |
| Lockhart to Samokov | 6,206.07 mi (9,987.71 km) |
| Lockhart to Sandanski | 6,231.25 mi (10,028.22 km) |
| Lockhart to Sevlievo | 6,232.00 mi (10,029.44 km) |
| Lockhart to Shumen | 6,285.84 mi (10,116.08 km) |
| Lockhart to Silistra | 6,257.04 mi (10,069.74 km) |
| Lockhart to Sliven | 6,293.05 mi (10,127.68 km) |
