| Gronau to Cassino | 805.87 mi (1,296.91 km) |
| Gronau to Castagneto Carducci | 646.34 mi (1,040.18 km) |
| Gronau to Castano Primo | 466.92 mi (751.44 km) |
| Gronau to Castel Bolognese | 587.49 mi (945.47 km) |
| Gronau to Castel Gandolfo | 769.36 mi (1,238.17 km) |
| Gronau to Castel Goffredo | 502.54 mi (808.75 km) |
| Gronau to Castel Maggiore | 564.06 mi (907.76 km) |
| Gronau to Castel Mella | 484.72 mi (780.08 km) |
| Gronau to Castel San Giorgio | 868.48 mi (1,397.68 km) |
| Gronau to Castel San Giovanni | 506.71 mi (815.47 km) |
| Gronau to Castel San Pietro Terme | 578.45 mi (930.92 km) |
| Gronau to Castel Volturno | 836.48 mi (1,346.18 km) |
| Gronau to Castelbuono | 1,043.76 mi (1,679.77 km) |
| Gronau to Casteldaccia | 1,027.39 mi (1,653.43 km) |
| Gronau to Castelfidardo | 674.89 mi (1,086.13 km) |
