| Bowling Green to Popovo | 5,465.99 mi (8,796.66 km) |
| Bowling Green to Provadia | 5,518.72 mi (8,881.53 km) |
| Bowling Green to Radnevo | 5,502.49 mi (8,855.40 km) |
| Bowling Green to Radomir | 5,375.48 mi (8,651.00 km) |
| Bowling Green to Rakitovo | 5,445.05 mi (8,762.96 km) |
| Bowling Green to Rakovski | 5,465.71 mi (8,796.21 km) |
| Bowling Green to Razgrad | 5,468.27 mi (8,800.34 km) |
| Bowling Green to Razlog | 5,425.26 mi (8,731.12 km) |
| Bowling Green to Ruse | 5,433.93 mi (8,745.07 km) |
| Bowling Green to Samokov | 5,408.62 mi (8,704.33 km) |
| Bowling Green to Sandanski | 5,431.95 mi (8,741.88 km) |
| Bowling Green to Sevlievo | 5,438.15 mi (8,751.86 km) |
| Bowling Green to Shumen | 5,495.38 mi (8,843.96 km) |
| Bowling Green to Silistra | 5,469.15 mi (8,801.75 km) |
| Bowling Green to Sliven | 5,500.26 mi (8,851.81 km) |
