| Sioux Falls to Octeville | 4,222.17 mi (6,794.93 km) |
| Sioux Falls to Oignies | 4,355.65 mi (7,009.74 km) |
| Sioux Falls to Oissel | 4,333.75 mi (6,974.49 km) |
| Sioux Falls to Olivet | 4,424.34 mi (7,120.28 km) |
| Sioux Falls to Ollioules | 4,778.18 mi (7,689.74 km) |
| Sioux Falls to Olonne-sur-Mer | 4,340.04 mi (6,984.62 km) |
| Sioux Falls to Oloron-Sainte-Marie | 4,523.75 mi (7,280.27 km) |
| Sioux Falls to Onet Village | 4,599.21 mi (7,401.72 km) |
| Sioux Falls to Onnaing | 4,380.30 mi (7,049.42 km) |
| Sioux Falls to Orange | 4,693.96 mi (7,554.20 km) |
| Sioux Falls to Orchies | 4,364.25 mi (7,023.58 km) |
| Sioux Falls to Orleans | 4,423.04 mi (7,118.19 km) |
| Sioux Falls to Orly | 4,405.70 mi (7,090.29 km) |
| Sioux Falls to Ormesson-sur-Marne | 4,409.24 mi (7,095.98 km) |
| Sioux Falls to Orsay | 4,400.13 mi (7,081.33 km) |
