| Napa to Octeville | 5,368.97 mi (8,640.52 km) |
| Napa to Oignies | 5,464.12 mi (8,793.64 km) |
| Napa to Oissel | 5,466.78 mi (8,797.94 km) |
| Napa to Olivet | 5,567.77 mi (8,960.45 km) |
| Napa to Ollioules | 5,940.92 mi (9,560.98 km) |
| Napa to Olonne-sur-Mer | 5,519.68 mi (8,883.06 km) |
| Napa to Oloron-Sainte-Marie | 5,727.85 mi (9,218.08 km) |
| Napa to Onet Village | 5,772.54 mi (9,290.01 km) |
| Napa to Onnaing | 5,485.68 mi (8,828.34 km) |
| Napa to Orange | 5,854.62 mi (9,422.11 km) |
| Napa to Orchies | 5,471.00 mi (8,804.73 km) |
| Napa to Orleans | 5,566.01 mi (8,957.63 km) |
| Napa to Orly | 5,536.75 mi (8,910.54 km) |
| Napa to Ormesson-sur-Marne | 5,538.90 mi (8,913.99 km) |
| Napa to Orsay | 5,533.00 mi (8,904.50 km) |
