| Calumet City to Popovo | 5,272.70 mi (8,485.60 km) |
| Calumet City to Provadia | 5,323.18 mi (8,566.83 km) |
| Calumet City to Radnevo | 5,313.52 mi (8,551.28 km) |
| Calumet City to Radomir | 5,192.74 mi (8,356.91 km) |
| Calumet City to Rakitovo | 5,261.64 mi (8,467.79 km) |
| Calumet City to Rakovski | 5,279.10 mi (8,495.89 km) |
| Calumet City to Razgrad | 5,273.70 mi (8,487.20 km) |
| Calumet City to Razlog | 5,243.70 mi (8,438.93 km) |
| Calumet City to Ruse | 5,239.68 mi (8,432.44 km) |
| Calumet City to Samokov | 5,225.21 mi (8,409.17 km) |
| Calumet City to Sandanski | 5,251.98 mi (8,452.24 km) |
| Calumet City to Sevlievo | 5,248.61 mi (8,446.83 km) |
| Calumet City to Shumen | 5,300.68 mi (8,530.62 km) |
| Calumet City to Silistra | 5,270.89 mi (8,482.68 km) |
| Calumet City to Sliven | 5,309.01 mi (8,544.03 km) |
