| Indianapolis to Octeville | 3,983.09 mi (6,410.16 km) |
| Indianapolis to Oignies | 4,141.87 mi (6,665.69 km) |
| Indianapolis to Oissel | 4,102.04 mi (6,601.60 km) |
| Indianapolis to Olivet | 4,181.96 mi (6,730.21 km) |
| Indianapolis to Ollioules | 4,511.29 mi (7,260.23 km) |
| Indianapolis to Olonne-sur-Mer | 4,071.08 mi (6,551.78 km) |
| Indianapolis to Oloron-Sainte-Marie | 4,229.63 mi (6,806.92 km) |
| Indianapolis to Onet Village | 4,328.54 mi (6,966.12 km) |
| Indianapolis to Onnaing | 4,168.05 mi (6,707.83 km) |
| Indianapolis to Orange | 4,430.84 mi (7,130.75 km) |
| Indianapolis to Orchies | 4,151.47 mi (6,681.15 km) |
| Indianapolis to Orleans | 4,181.05 mi (6,728.74 km) |
| Indianapolis to Orly | 4,173.38 mi (6,716.41 km) |
| Indianapolis to Ormesson-sur-Marne | 4,177.88 mi (6,723.65 km) |
| Indianapolis to Orsay | 4,166.59 mi (6,705.48 km) |
