| Sioux Falls to Opwijk | 4,376.57 mi (7,043.40 km) |
| Sioux Falls to Ostend | 4,321.92 mi (6,955.47 km) |
| Sioux Falls to Oud-Heverlee | 4,398.90 mi (7,079.35 km) |
| Sioux Falls to Oud-Turnhout | 4,389.45 mi (7,064.13 km) |
| Sioux Falls to Oudenaarde | 4,361.15 mi (7,018.59 km) |
| Sioux Falls to Oudenburg | 4,326.48 mi (6,962.79 km) |
| Sioux Falls to Oupeye | 4,437.89 mi (7,142.09 km) |
| Sioux Falls to Overijse | 4,396.38 mi (7,075.30 km) |
| Sioux Falls to Overpelt | 4,408.50 mi (7,094.79 km) |
| Sioux Falls to Paal | 4,407.66 mi (7,093.44 km) |
| Sioux Falls to Peer | 4,413.32 mi (7,102.55 km) |
| Sioux Falls to Pepinster | 4,449.92 mi (7,161.45 km) |
| Sioux Falls to Peruwelz | 4,374.41 mi (7,039.94 km) |
| Sioux Falls to Perwez | 4,412.86 mi (7,101.82 km) |
| Sioux Falls to Philippeville | 4,421.56 mi (7,115.81 km) |
