| West Chicago to Popovo | 5,282.19 mi (8,500.87 km) |
| West Chicago to Provadia | 5,332.31 mi (8,581.53 km) |
| West Chicago to Radnevo | 5,323.62 mi (8,567.55 km) |
| West Chicago to Radomir | 5,203.80 mi (8,374.71 km) |
| West Chicago to Rakitovo | 5,272.57 mi (8,485.38 km) |
| West Chicago to Rakovski | 5,289.56 mi (8,512.73 km) |
| West Chicago to Razgrad | 5,283.00 mi (8,502.16 km) |
| West Chicago to Razlog | 5,254.91 mi (8,456.95 km) |
| West Chicago to Ruse | 5,249.03 mi (8,447.50 km) |
| West Chicago to Samokov | 5,236.16 mi (8,426.78 km) |
| West Chicago to Sandanski | 5,263.40 mi (8,470.62 km) |
| West Chicago to Sevlievo | 5,258.66 mi (8,463.00 km) |
| West Chicago to Shumen | 5,309.94 mi (8,545.53 km) |
| West Chicago to Silistra | 5,279.63 mi (8,496.75 km) |
| West Chicago to Sliven | 5,318.79 mi (8,559.76 km) |
