| Southlake to Popovo | 6,069.24 mi (9,767.50 km) |
| Southlake to Provadia | 6,119.54 mi (9,848.44 km) |
| Southlake to Radnevo | 6,110.21 mi (9,833.44 km) |
| Southlake to Radomir | 5,989.30 mi (9,638.85 km) |
| Southlake to Rakitovo | 6,058.24 mi (9,749.80 km) |
| Southlake to Rakovski | 6,075.80 mi (9,778.05 km) |
| Southlake to Razgrad | 6,070.15 mi (9,768.96 km) |
| Southlake to Razlog | 6,040.20 mi (9,720.76 km) |
| Southlake to Ruse | 6,036.15 mi (9,714.25 km) |
| Southlake to Samokov | 6,021.81 mi (9,691.17 km) |
| Southlake to Sandanski | 6,048.35 mi (9,733.89 km) |
| Southlake to Sevlievo | 6,045.30 mi (9,728.97 km) |
| Southlake to Shumen | 6,097.11 mi (9,812.35 km) |
| Southlake to Silistra | 6,066.98 mi (9,763.85 km) |
| Southlake to Sliven | 6,105.65 mi (9,826.09 km) |
