| Houma to Octeville | 4,652.63 mi (7,487.68 km) |
| Houma to Oignies | 4,823.89 mi (7,763.31 km) |
| Houma to Oissel | 4,774.47 mi (7,683.77 km) |
| Houma to Olivet | 4,847.03 mi (7,800.55 km) |
| Houma to Ollioules | 5,156.15 mi (8,298.03 km) |
| Houma to Olonne-sur-Mer | 4,720.44 mi (7,596.81 km) |
| Houma to Oloron-Sainte-Marie | 4,858.57 mi (7,819.11 km) |
| Houma to Onet Village | 4,973.18 mi (8,003.57 km) |
| Houma to Onnaing | 4,850.62 mi (7,806.31 km) |
| Houma to Orange | 5,079.34 mi (8,174.41 km) |
| Houma to Orchies | 4,833.93 mi (7,779.46 km) |
| Houma to Orleans | 4,846.37 mi (7,799.48 km) |
| Houma to Orly | 4,844.61 mi (7,796.64 km) |
| Houma to Ormesson-sur-Marne | 4,849.61 mi (7,804.70 km) |
| Houma to Orsay | 4,837.17 mi (7,784.68 km) |
