| Galveston to Noventa Vicentina | 5,527.61 mi (8,895.83 km) |
| Galveston to Novi di Modena | 5,515.48 mi (8,876.30 km) |
| Galveston to Novi Ligure | 5,431.18 mi (8,740.65 km) |
| Galveston to Nuoro | 5,611.70 mi (9,031.16 km) |
| Galveston to Occhiobello | 5,542.78 mi (8,920.25 km) |
| Galveston to Oderzo | 5,548.70 mi (8,929.77 km) |
| Galveston to Oggiono | 5,419.27 mi (8,721.47 km) |
| Galveston to Olbia | 5,597.73 mi (9,008.68 km) |
| Galveston to Oleggio | 5,395.70 mi (8,683.54 km) |
| Galveston to Olgiate Comasco | 5,403.31 mi (8,695.79 km) |
| Galveston to Olgiate Olona | 5,405.02 mi (8,698.53 km) |
| Galveston to Omegna | 5,376.68 mi (8,652.93 km) |
| Galveston to Opera | 5,427.66 mi (8,734.97 km) |
| Galveston to Oppeano | 5,512.53 mi (8,871.56 km) |
| Galveston to Orbassano | 5,369.60 mi (8,641.53 km) |
