| Campbell to Octeville | 5,415.88 mi (8,716.02 km) |
| Campbell to Oignies | 5,513.70 mi (8,873.45 km) |
| Campbell to Oissel | 5,514.77 mi (8,875.17 km) |
| Campbell to Olivet | 5,615.18 mi (9,036.76 km) |
| Campbell to Ollioules | 5,987.43 mi (9,635.84 km) |
| Campbell to Olonne-sur-Mer | 5,564.37 mi (8,954.98 km) |
| Campbell to Oloron-Sainte-Marie | 5,770.81 mi (9,287.22 km) |
| Campbell to Onet Village | 5,818.04 mi (9,363.23 km) |
| Campbell to Onnaing | 5,535.49 mi (8,908.50 km) |
| Campbell to Orange | 5,901.18 mi (9,497.04 km) |
| Campbell to Orchies | 5,520.71 mi (8,884.72 km) |
| Campbell to Orleans | 5,613.46 mi (9,033.99 km) |
| Campbell to Orly | 5,584.97 mi (8,988.14 km) |
| Campbell to Ormesson-sur-Marne | 5,587.21 mi (8,991.75 km) |
| Campbell to Orsay | 5,581.09 mi (8,981.90 km) |
