| Rio Grande City to Noventa Vicentina | 5,835.81 mi (9,391.83 km) |
| Rio Grande City to Novi di Modena | 5,824.10 mi (9,372.99 km) |
| Rio Grande City to Novi Ligure | 5,740.41 mi (9,238.30 km) |
| Rio Grande City to Nuoro | 5,922.59 mi (9,531.48 km) |
| Rio Grande City to Occhiobello | 5,851.20 mi (9,416.60 km) |
| Rio Grande City to Oderzo | 5,856.27 mi (9,424.75 km) |
| Rio Grande City to Oggiono | 5,727.75 mi (9,217.93 km) |
| Rio Grande City to Olbia | 5,908.43 mi (9,508.71 km) |
| Rio Grande City to Oleggio | 5,704.48 mi (9,180.47 km) |
| Rio Grande City to Olgiate Comasco | 5,711.89 mi (9,192.40 km) |
| Rio Grande City to Olgiate Olona | 5,713.71 mi (9,195.33 km) |
| Rio Grande City to Omegna | 5,685.34 mi (9,149.67 km) |
| Rio Grande City to Opera | 5,736.42 mi (9,231.87 km) |
| Rio Grande City to Oppeano | 5,820.82 mi (9,367.70 km) |
| Rio Grande City to Orbassano | 5,678.97 mi (9,139.41 km) |
