| Alum Rock to Popovo | 6,510.66 mi (10,477.89 km) |
| Alum Rock to Provadia | 6,546.17 mi (10,535.05 km) |
| Alum Rock to Radnevo | 6,569.93 mi (10,573.29 km) |
| Alum Rock to Radomir | 6,487.09 mi (10,439.97 km) |
| Alum Rock to Rakitovo | 6,548.26 mi (10,538.41 km) |
| Alum Rock to Rakovski | 6,549.33 mi (10,540.12 km) |
| Alum Rock to Razgrad | 6,505.13 mi (10,469.00 km) |
| Alum Rock to Razlog | 6,540.15 mi (10,525.35 km) |
| Alum Rock to Ruse | 6,475.12 mi (10,420.71 km) |
| Alum Rock to Samokov | 6,514.26 mi (10,483.70 km) |
| Alum Rock to Sandanski | 6,555.21 mi (10,549.60 km) |
| Alum Rock to Sevlievo | 6,506.75 mi (10,471.61 km) |
| Alum Rock to Shumen | 6,529.54 mi (10,508.28 km) |
| Alum Rock to Silistra | 6,483.75 mi (10,434.59 km) |
| Alum Rock to Sliven | 6,554.57 mi (10,548.55 km) |
