| Walnut Creek to Octeville | 5,383.28 mi (8,663.55 km) |
| Walnut Creek to Oignies | 5,479.75 mi (8,818.80 km) |
| Walnut Creek to Oissel | 5,481.63 mi (8,821.83 km) |
| Walnut Creek to Olivet | 5,582.33 mi (8,983.89 km) |
| Walnut Creek to Ollioules | 5,955.05 mi (9,583.73 km) |
| Walnut Creek to Olonne-sur-Mer | 5,532.91 mi (8,904.36 km) |
| Walnut Creek to Oloron-Sainte-Marie | 5,740.26 mi (9,238.05 km) |
| Walnut Creek to Onet Village | 5,786.17 mi (9,311.95 km) |
| Walnut Creek to Onnaing | 5,501.42 mi (8,853.68 km) |
| Walnut Creek to Orange | 5,868.78 mi (9,444.88 km) |
| Walnut Creek to Orchies | 5,486.70 mi (8,829.98 km) |
| Walnut Creek to Orleans | 5,580.59 mi (8,981.09 km) |
| Walnut Creek to Orly | 5,551.71 mi (8,934.61 km) |
| Walnut Creek to Ormesson-sur-Marne | 5,553.90 mi (8,938.14 km) |
| Walnut Creek to Orsay | 5,547.90 mi (8,928.48 km) |
