| Heppenheim to Obernburg am Main | 26.24 mi (42.23 km) |
| Heppenheim to Obernkirchen | 182.45 mi (293.62 km) |
| Heppenheim to Oberschleissheim | 164.04 mi (264.00 km) |
| Heppenheim to Oberstdorf | 171.59 mi (276.14 km) |
| Heppenheim to Obertraubling | 165.67 mi (266.62 km) |
| Heppenheim to Obertshausen | 30.52 mi (49.12 km) |
| Heppenheim to Oberursel | 38.80 mi (62.45 km) |
| Heppenheim to Ochsenfurt | 63.88 mi (102.80 km) |
| Heppenheim to Ochsenhausen | 123.78 mi (199.20 km) |
| Heppenheim to Ochtrup | 187.95 mi (302.47 km) |
| Heppenheim to Odenthal | 117.18 mi (188.58 km) |
| Heppenheim to Oelde | 152.83 mi (245.96 km) |
| Heppenheim to Oelsnitz | 165.43 mi (266.24 km) |
| Heppenheim to Oer-Erkenschwick | 150.92 mi (242.87 km) |
| Heppenheim to Oerlinghausen | 160.55 mi (258.38 km) |
