| Middle Valley to Octeville | 4,152.63 mi (6,683.01 km) |
| Middle Valley to Oignies | 4,322.16 mi (6,955.84 km) |
| Middle Valley to Oissel | 4,274.08 mi (6,878.46 km) |
| Middle Valley to Olivet | 4,347.95 mi (6,997.35 km) |
| Middle Valley to Ollioules | 4,661.68 mi (7,502.25 km) |
| Middle Valley to Olonne-sur-Mer | 4,224.49 mi (6,798.65 km) |
| Middle Valley to Oloron-Sainte-Marie | 4,367.86 mi (7,029.39 km) |
| Middle Valley to Onet Village | 4,478.58 mi (7,207.58 km) |
| Middle Valley to Onnaing | 4,348.82 mi (6,998.76 km) |
| Middle Valley to Orange | 4,583.93 mi (7,377.12 km) |
| Middle Valley to Orchies | 4,332.14 mi (6,971.91 km) |
| Middle Valley to Orleans | 4,347.24 mi (6,996.21 km) |
| Middle Valley to Orly | 4,344.45 mi (6,991.72 km) |
| Middle Valley to Ormesson-sur-Marne | 4,349.37 mi (6,999.64 km) |
| Middle Valley to Orsay | 4,337.12 mi (6,979.92 km) |
