| Cities | Distance |
|---|---|
| Kalkar to Novi di Modena | 517.96 mi (833.57 km) |
| Kalkar to Novi Ligure | 495.62 mi (797.63 km) |
| Kalkar to Nuoro | 802.38 mi (1,291.30 km) |
| Kalkar to Occhiobello | 529.65 mi (852.39 km) |
| Kalkar to Oderzo | 498.82 mi (802.78 km) |
| Kalkar to Oggiono | 434.32 mi (698.96 km) |
| Kalkar to Olbia | 763.04 mi (1,228.00 km) |
| Kalkar to Oleggio | 437.34 mi (703.82 km) |
| Kalkar to Olgiate Comasco | 429.06 mi (690.51 km) |
| Kalkar to Olgiate Olona | 438.02 mi (704.93 km) |
| Kalkar to Omegna | 416.17 mi (669.76 km) |
| Kalkar to Opera | 458.94 mi (738.59 km) |
| Kalkar to Oppeano | 497.74 mi (801.04 km) |
| Kalkar to Orbassano | 468.58 mi (754.11 km) |
| Kalkar to Orbetello | 682.55 mi (1,098.46 km) |