| Catalina Foothills to Octeville | 5,312.99 mi (8,550.43 km) |
| Catalina Foothills to Oignies | 5,443.78 mi (8,760.91 km) |
| Catalina Foothills to Oissel | 5,423.92 mi (8,728.96 km) |
| Catalina Foothills to Olivet | 5,515.19 mi (8,875.83 km) |
| Catalina Foothills to Ollioules | 5,869.53 mi (9,446.10 km) |
| Catalina Foothills to Olonne-sur-Mer | 5,431.25 mi (8,740.76 km) |
| Catalina Foothills to Oloron-Sainte-Marie | 5,613.34 mi (9,033.79 km) |
| Catalina Foothills to Onet Village | 5,690.47 mi (9,157.92 km) |
| Catalina Foothills to Onnaing | 5,468.16 mi (8,800.15 km) |
| Catalina Foothills to Orange | 5,785.32 mi (9,310.57 km) |
| Catalina Foothills to Orchies | 5,452.21 mi (8,774.49 km) |
| Catalina Foothills to Orleans | 5,513.86 mi (8,873.71 km) |
| Catalina Foothills to Orly | 5,495.84 mi (8,844.70 km) |
| Catalina Foothills to Ormesson-sur-Marne | 5,499.29 mi (8,850.26 km) |
| Catalina Foothills to Orsay | 5,490.39 mi (8,835.92 km) |
