| Gronau to Karlovo | 1,056.59 mi (1,700.42 km) |
| Gronau to Karnobat | 1,137.14 mi (1,830.05 km) |
| Gronau to Kavarna | 1,152.61 mi (1,854.94 km) |
| Gronau to Kazanlak | 1,079.37 mi (1,737.08 km) |
| Gronau to Knezha | 989.16 mi (1,591.90 km) |
| Gronau to Kostinbrod | 991.61 mi (1,595.84 km) |
| Gronau to Kozloduy | 963.00 mi (1,549.80 km) |
| Gronau to Kyustendil | 1,000.49 mi (1,610.13 km) |
| Gronau to Levski | 1,033.98 mi (1,664.03 km) |
| Gronau to Lom | 943.01 mi (1,517.63 km) |
| Gronau to Lovech | 1,029.64 mi (1,657.05 km) |
| Gronau to Lukovit | 1,006.53 mi (1,619.85 km) |
| Gronau to Lyaskovets | 1,068.08 mi (1,718.90 km) |
| Gronau to Mezdra | 992.19 mi (1,596.78 km) |
| Gronau to Momchilgrad | 1,133.41 mi (1,824.05 km) |
