| Bolingbrook to Popovo | 5,288.29 mi (8,510.67 km) |
| Bolingbrook to Provadia | 5,338.54 mi (8,591.55 km) |
| Bolingbrook to Radnevo | 5,329.49 mi (8,576.98 km) |
| Bolingbrook to Radomir | 5,209.30 mi (8,383.57 km) |
| Bolingbrook to Rakitovo | 5,278.12 mi (8,494.32 km) |
| Bolingbrook to Rakovski | 5,295.29 mi (8,521.95 km) |
| Bolingbrook to Razgrad | 5,289.16 mi (8,512.08 km) |
| Bolingbrook to Razlog | 5,260.36 mi (8,465.73 km) |
| Bolingbrook to Ruse | 5,255.17 mi (8,457.38 km) |
| Bolingbrook to Samokov | 5,241.71 mi (8,435.71 km) |
| Bolingbrook to Sandanski | 5,268.77 mi (8,479.26 km) |
| Bolingbrook to Sevlievo | 5,264.55 mi (8,472.47 km) |
| Bolingbrook to Shumen | 5,316.12 mi (8,555.47 km) |
| Bolingbrook to Silistra | 5,286.00 mi (8,507.00 km) |
| Bolingbrook to Sliven | 5,324.77 mi (8,569.40 km) |
