| Gnarrenburg to Novi di Modena | 592.98 mi (954.31 km) |
| Gnarrenburg to Novi Ligure | 596.16 mi (959.43 km) |
| Gnarrenburg to Nuoro | 903.16 mi (1,453.49 km) |
| Gnarrenburg to Occhiobello | 596.23 mi (959.54 km) |
| Gnarrenburg to Oderzo | 548.06 mi (882.01 km) |
| Gnarrenburg to Oggiono | 525.55 mi (845.79 km) |
| Gnarrenburg to Olbia | 861.88 mi (1,387.06 km) |
| Gnarrenburg to Oleggio | 538.24 mi (866.22 km) |
| Gnarrenburg to Olgiate Comasco | 525.33 mi (845.43 km) |
| Gnarrenburg to Olgiate Olona | 535.71 mi (862.15 km) |
| Gnarrenburg to Omegna | 519.46 mi (835.99 km) |
| Gnarrenburg to Opera | 553.04 mi (890.03 km) |
| Gnarrenburg to Oppeano | 567.18 mi (912.79 km) |
| Gnarrenburg to Orbassano | 582.69 mi (937.75 km) |
| Gnarrenburg to Orbetello | 763.14 mi (1,228.16 km) |
