| Sioux Falls to Noventa Vicentina | 4,888.52 mi (7,867.32 km) |
| Sioux Falls to Novi di Modena | 4,884.39 mi (7,860.66 km) |
| Sioux Falls to Novi Ligure | 4,814.08 mi (7,747.52 km) |
| Sioux Falls to Nuoro | 5,042.24 mi (8,114.71 km) |
| Sioux Falls to Occhiobello | 4,907.35 mi (7,897.61 km) |
| Sioux Falls to Oderzo | 4,898.66 mi (7,883.64 km) |
| Sioux Falls to Oggiono | 4,787.30 mi (7,704.42 km) |
| Sioux Falls to Olbia | 5,020.23 mi (8,079.28 km) |
| Sioux Falls to Oleggio | 4,769.90 mi (7,676.42 km) |
| Sioux Falls to Olgiate Comasco | 4,773.53 mi (7,682.25 km) |
| Sioux Falls to Olgiate Olona | 4,777.41 mi (7,688.50 km) |
| Sioux Falls to Omegna | 4,749.00 mi (7,642.78 km) |
| Sioux Falls to Opera | 4,800.96 mi (7,726.40 km) |
| Sioux Falls to Oppeano | 4,875.31 mi (7,846.06 km) |
| Sioux Falls to Orbassano | 4,756.94 mi (7,655.55 km) |
