| Gloucester City to Noventa Vicentina | 4,203.51 mi (6,764.89 km) |
| Gloucester City to Novi di Modena | 4,189.34 mi (6,742.10 km) |
| Gloucester City to Novi Ligure | 4,102.23 mi (6,601.89 km) |
| Gloucester City to Nuoro | 4,274.53 mi (6,879.20 km) |
| Gloucester City to Occhiobello | 4,217.59 mi (6,787.56 km) |
| Gloucester City to Oderzo | 4,227.61 mi (6,803.68 km) |
| Gloucester City to Oggiono | 4,093.99 mi (6,588.64 km) |
| Gloucester City to Olbia | 4,261.44 mi (6,858.13 km) |
| Gloucester City to Oleggio | 4,069.00 mi (6,548.42 km) |
| Gloucester City to Olgiate Comasco | 4,077.56 mi (6,562.21 km) |
| Gloucester City to Olgiate Olona | 4,078.71 mi (6,564.05 km) |
| Gloucester City to Omegna | 4,050.57 mi (6,518.76 km) |
| Gloucester City to Opera | 4,100.97 mi (6,599.88 km) |
| Gloucester City to Oppeano | 4,188.02 mi (6,739.96 km) |
| Gloucester City to Orbassano | 4,040.01 mi (6,501.77 km) |
