| Piedras Blancas to Popovo | 1,605.33 mi (2,583.54 km) |
| Piedras Blancas to Provadia | 1,666.78 mi (2,682.42 km) |
| Piedras Blancas to Radnevo | 1,606.69 mi (2,585.71 km) |
| Piedras Blancas to Radomir | 1,454.66 mi (2,341.05 km) |
| Piedras Blancas to Rakitovo | 1,520.14 mi (2,446.44 km) |
| Piedras Blancas to Rakovski | 1,558.87 mi (2,508.75 km) |
| Piedras Blancas to Razgrad | 1,616.72 mi (2,601.86 km) |
| Piedras Blancas to Razlog | 1,491.16 mi (2,399.79 km) |
| Piedras Blancas to Ruse | 1,585.30 mi (2,551.29 km) |
| Piedras Blancas to Samokov | 1,488.04 mi (2,394.78 km) |
| Piedras Blancas to Sandanski | 1,487.54 mi (2,393.96 km) |
| Piedras Blancas to Sevlievo | 1,554.76 mi (2,502.14 km) |
| Piedras Blancas to Shumen | 1,640.72 mi (2,640.48 km) |
| Piedras Blancas to Silistra | 1,645.51 mi (2,648.19 km) |
| Piedras Blancas to Sliven | 1,620.24 mi (2,607.52 km) |
