| Mount Holly to Octeville | 3,969.86 mi (6,388.86 km) |
| Mount Holly to Oignies | 4,145.04 mi (6,670.79 km) |
| Mount Holly to Oissel | 4,092.36 mi (6,586.01 km) |
| Mount Holly to Olivet | 4,162.73 mi (6,699.27 km) |
| Mount Holly to Ollioules | 4,467.82 mi (7,190.26 km) |
| Mount Holly to Olonne-sur-Mer | 4,033.11 mi (6,490.66 km) |
| Mount Holly to Oloron-Sainte-Marie | 4,169.03 mi (6,709.41 km) |
| Mount Holly to Onet Village | 4,284.96 mi (6,895.97 km) |
| Mount Holly to Onnaing | 4,171.92 mi (6,714.06 km) |
| Mount Holly to Orange | 4,391.54 mi (7,067.51 km) |
| Mount Holly to Orchies | 4,155.23 mi (6,687.19 km) |
| Mount Holly to Orleans | 4,162.14 mi (6,698.31 km) |
| Mount Holly to Orly | 4,162.00 mi (6,698.09 km) |
| Mount Holly to Ormesson-sur-Marne | 4,167.15 mi (6,706.38 km) |
| Mount Holly to Orsay | 4,154.39 mi (6,685.85 km) |
