| Lockport to Popovo | 5,290.76 mi (8,514.65 km) |
| Lockport to Provadia | 5,341.08 mi (8,595.63 km) |
| Lockport to Radnevo | 5,331.84 mi (8,580.77 km) |
| Lockport to Radomir | 5,211.47 mi (8,387.05 km) |
| Lockport to Rakitovo | 5,280.31 mi (8,497.85 km) |
| Lockport to Rakovski | 5,297.57 mi (8,525.62 km) |
| Lockport to Razgrad | 5,291.67 mi (8,516.12 km) |
| Lockport to Razlog | 5,262.49 mi (8,469.17 km) |
| Lockport to Ruse | 5,257.67 mi (8,461.40 km) |
| Lockport to Samokov | 5,243.89 mi (8,439.23 km) |
| Lockport to Sandanski | 5,270.86 mi (8,482.63 km) |
| Lockport to Sevlievo | 5,266.91 mi (8,476.27 km) |
| Lockport to Shumen | 5,318.63 mi (8,559.51 km) |
| Lockport to Silistra | 5,288.61 mi (8,511.20 km) |
| Lockport to Sliven | 5,327.19 mi (8,573.28 km) |
