| Watsonville to Octeville | 5,430.51 mi (8,739.56 km) |
| Watsonville to Oignies | 5,529.41 mi (8,898.73 km) |
| Watsonville to Oissel | 5,529.83 mi (8,899.41 km) |
| Watsonville to Olivet | 5,630.01 mi (9,060.62 km) |
| Watsonville to Ollioules | 6,001.87 mi (9,659.08 km) |
| Watsonville to Olonne-sur-Mer | 5,578.10 mi (8,977.08 km) |
| Watsonville to Oloron-Sainte-Marie | 5,783.83 mi (9,308.18 km) |
| Watsonville to Onet Village | 5,832.08 mi (9,385.83 km) |
| Watsonville to Onnaing | 5,551.28 mi (8,933.93 km) |
| Watsonville to Orange | 5,915.64 mi (9,520.31 km) |
| Watsonville to Orchies | 5,536.46 mi (8,910.08 km) |
| Watsonville to Orleans | 5,628.29 mi (9,057.86 km) |
| Watsonville to Orly | 5,600.12 mi (9,012.52 km) |
| Watsonville to Ormesson-sur-Marne | 5,602.40 mi (9,016.19 km) |
| Watsonville to Orsay | 5,596.19 mi (9,006.20 km) |
