| Mercerville to Octeville | 3,488.19 mi (5,613.69 km) |
| Mercerville to Oignies | 3,661.86 mi (5,893.20 km) |
| Mercerville to Oissel | 3,610.37 mi (5,810.32 km) |
| Mercerville to Olivet | 3,682.03 mi (5,925.66 km) |
| Mercerville to Ollioules | 3,991.87 mi (6,424.30 km) |
| Mercerville to Olonne-sur-Mer | 3,555.49 mi (5,722.00 km) |
| Mercerville to Oloron-Sainte-Marie | 3,696.92 mi (5,949.61 km) |
| Mercerville to Onet Village | 3,808.82 mi (6,129.70 km) |
| Mercerville to Onnaing | 3,688.70 mi (5,936.40 km) |
| Mercerville to Orange | 3,914.61 mi (6,299.96 km) |
| Mercerville to Orchies | 3,672.01 mi (5,909.53 km) |
| Mercerville to Orleans | 3,681.39 mi (5,924.62 km) |
| Mercerville to Orly | 3,680.26 mi (5,922.81 km) |
| Mercerville to Ormesson-sur-Marne | 3,685.34 mi (5,930.98 km) |
| Mercerville to Orsay | 3,672.75 mi (5,910.71 km) |
