| Glen Ellyn to Popovo | 5,277.99 mi (8,494.10 km) |
| Glen Ellyn to Provadia | 5,328.18 mi (8,574.87 km) |
| Glen Ellyn to Radnevo | 5,319.30 mi (8,560.59 km) |
| Glen Ellyn to Radomir | 5,199.29 mi (8,367.45 km) |
| Glen Ellyn to Rakitovo | 5,268.09 mi (8,478.17 km) |
| Glen Ellyn to Rakovski | 5,285.17 mi (8,505.66 km) |
| Glen Ellyn to Razgrad | 5,278.83 mi (8,495.45 km) |
| Glen Ellyn to Razlog | 5,250.37 mi (8,449.66 km) |
| Glen Ellyn to Ruse | 5,244.85 mi (8,440.77 km) |
| Glen Ellyn to Samokov | 5,231.67 mi (8,419.56 km) |
| Glen Ellyn to Sandanski | 5,258.82 mi (8,463.26 km) |
| Glen Ellyn to Sevlievo | 5,254.35 mi (8,456.06 km) |
| Glen Ellyn to Shumen | 5,305.78 mi (8,538.83 km) |
| Glen Ellyn to Silistra | 5,275.57 mi (8,490.21 km) |
| Glen Ellyn to Sliven | 5,314.53 mi (8,552.90 km) |
