| Hardinxveld-Giessendam to Octeville | 321.00 mi (516.60 km) |
| Hardinxveld-Giessendam to Oignies | 122.58 mi (197.27 km) |
| Hardinxveld-Giessendam to Oissel | 236.99 mi (381.40 km) |
| Hardinxveld-Giessendam to Olivet | 302.70 mi (487.16 km) |
| Hardinxveld-Giessendam to Ollioules | 601.39 mi (967.85 km) |
| Hardinxveld-Giessendam to Olonne-sur-Mer | 470.94 mi (757.90 km) |
| Hardinxveld-Giessendam to Oloron-Sainte-Marie | 647.16 mi (1,041.50 km) |
| Hardinxveld-Giessendam to Onet Village | 525.03 mi (844.95 km) |
| Hardinxveld-Giessendam to Onnaing | 112.33 mi (180.78 km) |
| Hardinxveld-Giessendam to Orange | 530.53 mi (853.80 km) |
| Hardinxveld-Giessendam to Orchies | 115.50 mi (185.88 km) |
| Hardinxveld-Giessendam to Orleans | 300.12 mi (482.99 km) |
| Hardinxveld-Giessendam to Orly | 238.06 mi (383.11 km) |
| Hardinxveld-Giessendam to Ormesson-sur-Marne | 232.59 mi (374.32 km) |
| Hardinxveld-Giessendam to Orsay | 245.09 mi (394.44 km) |
