| Heilbronn to Oestrich-Winkel | 80.13 mi (128.95 km) |
| Heilbronn to Offenburg | 75.09 mi (120.85 km) |
| Heilbronn to Oftersheim | 32.32 mi (52.01 km) |
| Heilbronn to Ohrdruf | 134.08 mi (215.78 km) |
| Heilbronn to Ohringen | 13.25 mi (21.33 km) |
| Heilbronn to Olbernhau | 210.99 mi (339.55 km) |
| Heilbronn to Olching | 116.13 mi (186.90 km) |
| Heilbronn to Oldenburg | 279.35 mi (449.56 km) |
| Heilbronn to Oldenburg in Holstein | 362.88 mi (584.00 km) |
| Heilbronn to Olfen | 194.82 mi (313.53 km) |
| Heilbronn to Olpe | 142.81 mi (229.83 km) |
| Heilbronn to Olsberg | 155.42 mi (250.12 km) |
| Heilbronn to Oranienburg | 304.26 mi (489.67 km) |
| Heilbronn to Ortenberg | 83.62 mi (134.58 km) |
| Heilbronn to Oschatz | 227.21 mi (365.66 km) |
