| Geldern to Octeville | 373.37 mi (600.88 km) |
| Geldern to Oignies | 162.31 mi (261.21 km) |
| Geldern to Oissel | 275.31 mi (443.07 km) |
| Geldern to Olivet | 320.88 mi (516.40 km) |
| Geldern to Ollioules | 579.47 mi (932.56 km) |
| Geldern to Olonne-sur-Mer | 502.84 mi (809.25 km) |
| Geldern to Oloron-Sainte-Marie | 659.91 mi (1,062.02 km) |
| Geldern to Onet Village | 523.54 mi (842.55 km) |
| Geldern to Onnaing | 142.40 mi (229.16 km) |
| Geldern to Orange | 514.84 mi (828.56 km) |
| Geldern to Orchies | 152.45 mi (245.35 km) |
| Geldern to Orleans | 318.50 mi (512.58 km) |
| Geldern to Orly | 259.21 mi (417.16 km) |
| Geldern to Ormesson-sur-Marne | 252.71 mi (406.69 km) |
| Geldern to Orsay | 267.76 mi (430.92 km) |
