| Chicago Ridge to Popovo | 5,276.26 mi (8,491.31 km) |
| Chicago Ridge to Provadia | 5,326.62 mi (8,572.36 km) |
| Chicago Ridge to Radnevo | 5,317.28 mi (8,557.33 km) |
| Chicago Ridge to Radomir | 5,196.82 mi (8,363.47 km) |
| Chicago Ridge to Rakitovo | 5,265.67 mi (8,474.28 km) |
| Chicago Ridge to Rakovski | 5,282.98 mi (8,502.13 km) |
| Chicago Ridge to Razgrad | 5,277.19 mi (8,492.82 km) |
| Chicago Ridge to Razlog | 5,247.83 mi (8,445.56 km) |
| Chicago Ridge to Ruse | 5,243.18 mi (8,438.09 km) |
| Chicago Ridge to Samokov | 5,229.25 mi (8,415.66 km) |
| Chicago Ridge to Sandanski | 5,256.17 mi (8,458.99 km) |
| Chicago Ridge to Sevlievo | 5,252.35 mi (8,452.84 km) |
| Chicago Ridge to Shumen | 5,304.16 mi (8,536.22 km) |
| Chicago Ridge to Silistra | 5,274.20 mi (8,488.00 km) |
| Chicago Ridge to Sliven | 5,312.66 mi (8,549.90 km) |
