| Cities | Distance |
|---|---|
| Hardenberg to Orbetello | 731.49 mi (1,177.22 km) |
| Hardenberg to Oria | 982.06 mi (1,580.47 km) |
| Hardenberg to Oristano | 879.77 mi (1,415.86 km) |
| Hardenberg to Orta Nova | 885.36 mi (1,424.85 km) |
| Hardenberg to Orte | 747.79 mi (1,203.46 km) |
| Hardenberg to Ortona | 792.97 mi (1,276.16 km) |
| Hardenberg to Orvieto | 726.40 mi (1,169.03 km) |
| Hardenberg to Orzinuovi | 517.36 mi (832.61 km) |
| Hardenberg to Osimo | 702.50 mi (1,130.57 km) |
| Hardenberg to Ospitaletto | 508.94 mi (819.05 km) |
| Hardenberg to Ostuni | 966.63 mi (1,555.65 km) |
| Hardenberg to Ottaviano | 889.85 mi (1,432.07 km) |
| Hardenberg to Ovada | 555.47 mi (893.95 km) |
| Hardenberg to Ozieri | 835.46 mi (1,344.55 km) |
| Hardenberg to Paceco | 1,047.21 mi (1,685.32 km) |