| Discovery Bay to Popovo | 6,471.69 mi (10,415.18 km) |
| Discovery Bay to Provadia | 6,507.17 mi (10,472.28 km) |
| Discovery Bay to Radnevo | 6,531.00 mi (10,510.64 km) |
| Discovery Bay to Radomir | 6,448.30 mi (10,377.53 km) |
| Discovery Bay to Rakitovo | 6,509.42 mi (10,475.91 km) |
| Discovery Bay to Rakovski | 6,510.44 mi (10,477.54 km) |
| Discovery Bay to Razgrad | 6,466.16 mi (10,406.27 km) |
| Discovery Bay to Razlog | 6,501.35 mi (10,462.91 km) |
| Discovery Bay to Ruse | 6,436.16 mi (10,357.99 km) |
| Discovery Bay to Samokov | 6,475.44 mi (10,421.22 km) |
| Discovery Bay to Sandanski | 6,516.44 mi (10,487.19 km) |
| Discovery Bay to Sevlievo | 6,467.84 mi (10,408.98 km) |
| Discovery Bay to Shumen | 6,490.55 mi (10,445.53 km) |
| Discovery Bay to Silistra | 6,444.74 mi (10,371.80 km) |
| Discovery Bay to Sliven | 6,515.61 mi (10,485.86 km) |
