| Glendale Heights to Popovo | 5,275.85 mi (8,490.67 km) |
| Glendale Heights to Provadia | 5,326.02 mi (8,571.39 km) |
| Glendale Heights to Radnevo | 5,317.22 mi (8,557.23 km) |
| Glendale Heights to Radomir | 5,197.29 mi (8,364.23 km) |
| Glendale Heights to Rakitovo | 5,266.07 mi (8,474.93 km) |
| Glendale Heights to Rakovski | 5,283.12 mi (8,502.35 km) |
| Glendale Heights to Razgrad | 5,276.68 mi (8,492.00 km) |
| Glendale Heights to Razlog | 5,248.38 mi (8,446.45 km) |
| Glendale Heights to Ruse | 5,242.71 mi (8,437.33 km) |
| Glendale Heights to Samokov | 5,229.66 mi (8,416.32 km) |
| Glendale Heights to Sandanski | 5,256.85 mi (8,460.08 km) |
| Glendale Heights to Sevlievo | 5,252.26 mi (8,452.70 km) |
| Glendale Heights to Shumen | 5,303.63 mi (8,535.37 km) |
| Glendale Heights to Silistra | 5,273.38 mi (8,486.69 km) |
| Glendale Heights to Sliven | 5,312.42 mi (8,549.51 km) |
