| American Canyon to Octeville | 5,374.34 mi (8,649.16 km) |
| American Canyon to Oignies | 5,469.80 mi (8,802.80 km) |
| American Canyon to Oissel | 5,472.28 mi (8,806.79 km) |
| American Canyon to Olivet | 5,573.20 mi (8,969.20 km) |
| American Canyon to Ollioules | 5,946.25 mi (9,569.56 km) |
| American Canyon to Olonne-sur-Mer | 5,524.79 mi (8,891.29 km) |
| American Canyon to Oloron-Sainte-Marie | 5,732.76 mi (9,225.98 km) |
| American Canyon to Onet Village | 5,777.75 mi (9,298.39 km) |
| American Canyon to Onnaing | 5,491.39 mi (8,837.53 km) |
| American Canyon to Orange | 5,859.96 mi (9,430.69 km) |
| American Canyon to Orchies | 5,476.70 mi (8,813.90 km) |
| American Canyon to Orleans | 5,571.45 mi (8,966.38 km) |
| American Canyon to Orly | 5,542.27 mi (8,919.43 km) |
| American Canyon to Ormesson-sur-Marne | 5,544.43 mi (8,922.90 km) |
| American Canyon to Orsay | 5,538.51 mi (8,913.37 km) |
