| Ponce to Popovo | 5,510.64 mi (8,868.52 km) |
| Ponce to Provadia | 5,571.89 mi (8,967.09 km) |
| Ponce to Radnevo | 5,514.93 mi (8,875.43 km) |
| Ponce to Radomir | 5,363.19 mi (8,631.22 km) |
| Ponce to Rakitovo | 5,428.72 mi (8,736.69 km) |
| Ponce to Rakovski | 5,467.33 mi (8,798.81 km) |
| Ponce to Razgrad | 5,521.03 mi (8,885.24 km) |
| Ponce to Razlog | 5,399.61 mi (8,689.83 km) |
| Ponce to Ruse | 5,488.66 mi (8,833.14 km) |
| Ponce to Samokov | 5,396.63 mi (8,685.03 km) |
| Ponce to Sandanski | 5,395.50 mi (8,683.22 km) |
| Ponce to Sevlievo | 5,461.83 mi (8,789.97 km) |
| Ponce to Shumen | 5,545.79 mi (8,925.08 km) |
| Ponce to Silistra | 5,545.97 mi (8,925.38 km) |
| Ponce to Sliven | 5,527.63 mi (8,895.86 km) |
