| North Auburn to Popovo | 6,395.61 mi (10,292.74 km) |
| North Auburn to Provadia | 6,431.07 mi (10,349.81 km) |
| North Auburn to Radnevo | 6,454.95 mi (10,388.24 km) |
| North Auburn to Radomir | 6,372.37 mi (10,255.34 km) |
| North Auburn to Rakitovo | 6,433.46 mi (10,353.65 km) |
| North Auburn to Rakovski | 6,434.42 mi (10,355.20 km) |
| North Auburn to Razgrad | 6,390.07 mi (10,283.82 km) |
| North Auburn to Razlog | 6,425.42 mi (10,340.71 km) |
| North Auburn to Ruse | 6,360.08 mi (10,235.55 km) |
| North Auburn to Samokov | 6,399.49 mi (10,298.99 km) |
| North Auburn to Sandanski | 6,440.53 mi (10,365.03 km) |
| North Auburn to Sevlievo | 6,391.79 mi (10,286.60 km) |
| North Auburn to Shumen | 6,414.46 mi (10,323.07 km) |
| North Auburn to Silistra | 6,368.63 mi (10,249.33 km) |
| North Auburn to Sliven | 6,439.54 mi (10,363.43 km) |
