| Harsewinkel to Novi di Modena | 503.70 mi (810.62 km) |
| Harsewinkel to Novi Ligure | 498.63 mi (802.47 km) |
| Harsewinkel to Nuoro | 806.63 mi (1,298.15 km) |
| Harsewinkel to Occhiobello | 510.24 mi (821.15 km) |
| Harsewinkel to Oderzo | 469.00 mi (754.78 km) |
| Harsewinkel to Oggiono | 430.22 mi (692.37 km) |
| Harsewinkel to Olbia | 765.83 mi (1,232.48 km) |
| Harsewinkel to Oleggio | 440.27 mi (708.55 km) |
| Harsewinkel to Olgiate Comasco | 428.52 mi (689.64 km) |
| Harsewinkel to Olgiate Olona | 438.59 mi (705.84 km) |
| Harsewinkel to Omegna | 420.76 mi (677.14 km) |
| Harsewinkel to Opera | 457.07 mi (735.58 km) |
| Harsewinkel to Oppeano | 479.81 mi (772.18 km) |
| Harsewinkel to Orbassano | 481.90 mi (775.54 km) |
| Harsewinkel to Orbetello | 672.81 mi (1,082.79 km) |
