| Mount Clemens to Octeville | 3,728.62 mi (6,000.64 km) |
| Mount Clemens to Oignies | 3,885.70 mi (6,253.43 km) |
| Mount Clemens to Oissel | 3,847.10 mi (6,191.31 km) |
| Mount Clemens to Olivet | 3,927.99 mi (6,321.48 km) |
| Mount Clemens to Ollioules | 4,260.19 mi (6,856.11 km) |
| Mount Clemens to Olonne-sur-Mer | 3,819.70 mi (6,147.21 km) |
| Mount Clemens to Oloron-Sainte-Marie | 3,981.70 mi (6,407.92 km) |
| Mount Clemens to Onet Village | 4,077.67 mi (6,562.38 km) |
| Mount Clemens to Onnaing | 3,911.81 mi (6,295.46 km) |
| Mount Clemens to Orange | 4,179.22 mi (6,725.80 km) |
| Mount Clemens to Orchies | 3,895.25 mi (6,268.80 km) |
| Mount Clemens to Orleans | 3,927.04 mi (6,319.96 km) |
| Mount Clemens to Orly | 3,918.56 mi (6,306.31 km) |
| Mount Clemens to Ormesson-sur-Marne | 3,922.98 mi (6,313.43 km) |
| Mount Clemens to Orsay | 3,911.85 mi (6,295.52 km) |
