| Baldock to Octeville | 175.16 mi (281.89 km) |
| Baldock to Oignies | 173.22 mi (278.77 km) |
| Baldock to Oissel | 191.37 mi (307.98 km) |
| Baldock to Olivet | 299.83 mi (482.54 km) |
| Baldock to Ollioules | 672.61 mi (1,082.46 km) |
| Baldock to Olonne-sur-Mer | 383.50 mi (617.19 km) |
| Baldock to Oloron-Sainte-Marie | 608.04 mi (978.54 km) |
| Baldock to Onet Village | 542.07 mi (872.38 km) |
| Baldock to Onnaing | 197.86 mi (318.43 km) |
| Baldock to Orange | 589.23 mi (948.27 km) |
| Baldock to Orchies | 181.73 mi (292.46 km) |
| Baldock to Orleans | 297.41 mi (478.63 km) |
| Baldock to Orly | 251.48 mi (404.71 km) |
| Baldock to Ormesson-sur-Marne | 251.87 mi (405.34 km) |
| Baldock to Orsay | 250.41 mi (403.00 km) |
