| West Columbia to Popovo | 5,404.16 mi (8,697.15 km) |
| West Columbia to Provadia | 5,459.58 mi (8,786.34 km) |
| West Columbia to Radnevo | 5,434.56 mi (8,746.07 km) |
| West Columbia to Radomir | 5,300.21 mi (8,529.87 km) |
| West Columbia to Rakitovo | 5,370.14 mi (8,642.41 km) |
| West Columbia to Rakovski | 5,394.89 mi (8,682.23 km) |
| West Columbia to Razgrad | 5,408.18 mi (8,703.62 km) |
| West Columbia to Razlog | 5,348.08 mi (8,606.91 km) |
| West Columbia to Ruse | 5,373.65 mi (8,648.06 km) |
| West Columbia to Samokov | 5,333.99 mi (8,584.22 km) |
| West Columbia to Sandanski | 5,352.65 mi (8,614.26 km) |
| West Columbia to Sevlievo | 5,371.46 mi (8,644.52 km) |
| West Columbia to Shumen | 5,435.26 mi (8,747.20 km) |
| West Columbia to Silistra | 5,414.12 mi (8,713.18 km) |
| West Columbia to Sliven | 5,435.40 mi (8,747.43 km) |
