| Camp Pendleton South to Octeville | 5,493.33 mi (8,840.66 km) |
| Camp Pendleton South to Oignies | 5,608.74 mi (9,026.39 km) |
| Camp Pendleton South to Oissel | 5,598.95 mi (9,010.63 km) |
| Camp Pendleton South to Olivet | 5,694.98 mi (9,165.19 km) |
| Camp Pendleton South to Ollioules | 6,059.30 mi (9,751.50 km) |
| Camp Pendleton South to Olonne-sur-Mer | 5,626.45 mi (9,054.89 km) |
| Camp Pendleton South to Oloron-Sainte-Marie | 5,820.65 mi (9,367.43 km) |
| Camp Pendleton South to Onet Village | 5,884.09 mi (9,469.54 km) |
| Camp Pendleton South to Onnaing | 5,631.96 mi (9,063.76 km) |
| Camp Pendleton South to Orange | 5,973.79 mi (9,613.88 km) |
| Camp Pendleton South to Orchies | 5,616.51 mi (9,038.91 km) |
| Camp Pendleton South to Orleans | 5,693.46 mi (9,162.75 km) |
| Camp Pendleton South to Orly | 5,670.33 mi (9,125.52 km) |
| Camp Pendleton South to Ormesson-sur-Marne | 5,673.21 mi (9,130.16 km) |
| Camp Pendleton South to Orsay | 5,665.62 mi (9,117.93 km) |
