| Geldern to Novi di Modena | 503.60 mi (810.47 km) |
| Geldern to Novi Ligure | 480.53 mi (773.34 km) |
| Geldern to Nuoro | 787.20 mi (1,266.87 km) |
| Geldern to Occhiobello | 515.64 mi (829.84 km) |
| Geldern to Oderzo | 485.73 mi (781.71 km) |
| Geldern to Oggiono | 419.50 mi (675.12 km) |
| Geldern to Olbia | 747.89 mi (1,203.62 km) |
| Geldern to Oleggio | 422.27 mi (679.58 km) |
| Geldern to Olgiate Comasco | 414.11 mi (666.45 km) |
| Geldern to Olgiate Olona | 423.03 mi (680.80 km) |
| Geldern to Omegna | 401.07 mi (645.45 km) |
| Geldern to Opera | 444.02 mi (714.57 km) |
| Geldern to Oppeano | 483.65 mi (778.37 km) |
| Geldern to Orbassano | 453.34 mi (729.59 km) |
| Geldern to Orbetello | 667.85 mi (1,074.80 km) |
