| Houten to Octeville | 340.34 mi (547.72 km) |
| Houten to Oignies | 143.20 mi (230.46 km) |
| Houten to Oissel | 257.61 mi (414.59 km) |
| Houten to Olivet | 322.53 mi (519.05 km) |
| Houten to Ollioules | 615.32 mi (990.26 km) |
| Houten to Olonne-sur-Mer | 491.56 mi (791.09 km) |
| Houten to Oloron-Sainte-Marie | 666.78 mi (1,073.09 km) |
| Houten to Onet Village | 542.78 mi (873.53 km) |
| Houten to Onnaing | 132.42 mi (213.10 km) |
| Houten to Orange | 545.74 mi (878.28 km) |
| Houten to Orchies | 136.04 mi (218.93 km) |
| Houten to Orleans | 319.95 mi (514.91 km) |
| Houten to Orly | 258.00 mi (415.21 km) |
| Houten to Ormesson-sur-Marne | 252.43 mi (406.25 km) |
| Houten to Orsay | 265.17 mi (426.75 km) |
