| Lake Norman of Catawba to Octeville | 3,955.93 mi (6,366.46 km) |
| Lake Norman of Catawba to Oignies | 4,130.61 mi (6,647.58 km) |
| Lake Norman of Catawba to Oissel | 4,078.35 mi (6,563.46 km) |
| Lake Norman of Catawba to Olivet | 4,149.07 mi (6,677.28 km) |
| Lake Norman of Catawba to Ollioules | 4,455.09 mi (7,169.77 km) |
| Lake Norman of Catawba to Olonne-sur-Mer | 4,020.07 mi (6,469.67 km) |
| Lake Norman of Catawba to Oloron-Sainte-Marie | 4,156.87 mi (6,689.83 km) |
| Lake Norman of Catawba to Onet Village | 4,272.19 mi (6,875.42 km) |
| Lake Norman of Catawba to Onnaing | 4,157.48 mi (6,690.82 km) |
| Lake Norman of Catawba to Orange | 4,378.64 mi (7,046.74 km) |
| Lake Norman of Catawba to Orchies | 4,140.79 mi (6,663.95 km) |
| Lake Norman of Catawba to Orleans | 4,148.46 mi (6,676.30 km) |
| Lake Norman of Catawba to Orly | 4,148.07 mi (6,675.67 km) |
| Lake Norman of Catawba to Ormesson-sur-Marne | 4,153.19 mi (6,683.92 km) |
| Lake Norman of Catawba to Orsay | 4,140.48 mi (6,663.46 km) |
