| Wood River to Popovo | 5,502.90 mi (8,856.06 km) |
| Wood River to Provadia | 5,553.63 mi (8,937.70 km) |
| Wood River to Radnevo | 5,543.21 mi (8,920.93 km) |
| Wood River to Radomir | 5,421.57 mi (8,725.17 km) |
| Wood River to Rakitovo | 5,490.58 mi (8,836.23 km) |
| Wood River to Rakovski | 5,508.48 mi (8,865.04 km) |
| Wood River to Razgrad | 5,504.04 mi (8,857.89 km) |
| Wood River to Razlog | 5,472.37 mi (8,806.93 km) |
| Wood River to Ruse | 5,469.97 mi (8,803.06 km) |
| Wood River to Samokov | 5,454.14 mi (8,777.59 km) |
| Wood River to Sandanski | 5,480.41 mi (8,819.87 km) |
| Wood River to Sevlievo | 5,478.36 mi (8,816.57 km) |
| Wood River to Shumen | 5,531.03 mi (8,901.34 km) |
| Wood River to Silistra | 5,501.61 mi (8,853.98 km) |
| Wood River to Sliven | 5,538.98 mi (8,914.13 km) |
