| Grootegast to Noventa Vicentina | 596.70 mi (960.30 km) |
| Grootegast to Novi di Modena | 611.59 mi (984.26 km) |
| Grootegast to Novi Ligure | 595.17 mi (957.83 km) |
| Grootegast to Nuoro | 902.70 mi (1,452.76 km) |
| Grootegast to Occhiobello | 620.86 mi (999.18 km) |
| Grootegast to Oderzo | 583.95 mi (939.78 km) |
| Grootegast to Oggiono | 531.58 mi (855.50 km) |
| Grootegast to Olbia | 863.00 mi (1,388.86 km) |
| Grootegast to Oleggio | 536.68 mi (863.71 km) |
| Grootegast to Olgiate Comasco | 527.42 mi (848.81 km) |
| Grootegast to Olgiate Olona | 536.74 mi (863.79 km) |
| Grootegast to Omegna | 515.85 mi (830.17 km) |
| Grootegast to Opera | 557.01 mi (896.43 km) |
| Grootegast to Oppeano | 589.59 mi (948.85 km) |
| Grootegast to Orbassano | 570.02 mi (917.35 km) |
