| Pearl River to Popovo | 4,788.24 mi (7,705.93 km) |
| Pearl River to Provadia | 4,842.98 mi (7,794.02 km) |
| Pearl River to Radnevo | 4,820.45 mi (7,757.77 km) |
| Pearl River to Radomir | 4,688.38 mi (7,545.23 km) |
| Pearl River to Rakitovo | 4,758.26 mi (7,657.67 km) |
| Pearl River to Rakovski | 4,781.66 mi (7,695.34 km) |
| Pearl River to Razgrad | 4,791.79 mi (7,711.64 km) |
| Pearl River to Razlog | 4,736.97 mi (7,623.42 km) |
| Pearl River to Ruse | 4,757.29 mi (7,656.11 km) |
| Pearl River to Samokov | 4,721.97 mi (7,599.28 km) |
| Pearl River to Sandanski | 4,742.31 mi (7,632.02 km) |
| Pearl River to Sevlievo | 4,756.92 mi (7,655.52 km) |
| Pearl River to Shumen | 4,818.90 mi (7,755.27 km) |
| Pearl River to Silistra | 4,796.44 mi (7,719.13 km) |
| Pearl River to Sliven | 4,820.37 mi (7,757.64 km) |
