| Heidelberg to Octeville | 464.52 mi (747.58 km) |
| Heidelberg to Oignies | 264.59 mi (425.81 km) |
| Heidelberg to Oissel | 342.90 mi (551.85 km) |
| Heidelberg to Olivet | 329.03 mi (529.52 km) |
| Heidelberg to Ollioules | 454.77 mi (731.87 km) |
| Heidelberg to Olonne-sur-Mer | 523.85 mi (843.05 km) |
| Heidelberg to Oloron-Sainte-Marie | 617.91 mi (994.43 km) |
| Heidelberg to Onet Village | 452.89 mi (728.85 km) |
| Heidelberg to Onnaing | 237.41 mi (382.08 km) |
| Heidelberg to Orange | 408.74 mi (657.81 km) |
| Heidelberg to Orchies | 254.00 mi (408.77 km) |
| Heidelberg to Orleans | 327.69 mi (527.37 km) |
| Heidelberg to Orly | 289.86 mi (466.48 km) |
| Heidelberg to Ormesson-sur-Marne | 282.79 mi (455.10 km) |
| Heidelberg to Orsay | 299.66 mi (482.26 km) |
