| Merrillville to Devnya | 5,325.24 mi (8,570.15 km) |
| Merrillville to Dimitrovgrad | 5,312.28 mi (8,549.29 km) |
| Merrillville to Dobrich | 5,317.22 mi (8,557.24 km) |
| Merrillville to Dospat | 5,279.07 mi (8,495.84 km) |
| Merrillville to Dupnitsa | 5,210.79 mi (8,385.96 km) |
| Merrillville to Elhovo | 5,341.52 mi (8,596.35 km) |
| Merrillville to Etropole | 5,216.12 mi (8,394.54 km) |
| Merrillville to Gabrovo | 5,262.91 mi (8,469.83 km) |
| Merrillville to Gorna Oryahovitsa | 5,263.14 mi (8,470.20 km) |
| Merrillville to Gotse Delchev | 5,266.98 mi (8,476.39 km) |
| Merrillville to Harmanli | 5,328.88 mi (8,576.01 km) |
| Merrillville to Haskovo | 5,316.76 mi (8,556.50 km) |
| Merrillville to Ihtiman | 5,228.34 mi (8,414.21 km) |
| Merrillville to Isperih | 5,274.83 mi (8,489.01 km) |
| Merrillville to Kardzhali | 5,323.26 mi (8,566.96 km) |
