| Haverhill to Oberkirch | 416.56 mi (670.38 km) |
| Haverhill to Obernburg am Main | 408.76 mi (657.83 km) |
| Haverhill to Obernkirchen | 367.71 mi (591.78 km) |
| Haverhill to Oberschleissheim | 558.23 mi (898.38 km) |
| Haverhill to Oberstdorf | 544.31 mi (875.99 km) |
| Haverhill to Obertraubling | 557.45 mi (897.13 km) |
| Haverhill to Obertshausen | 389.75 mi (627.24 km) |
| Haverhill to Oberursel | 375.55 mi (604.39 km) |
| Haverhill to Ochsenfurt | 451.70 mi (726.93 km) |
| Haverhill to Ochsenhausen | 503.80 mi (810.78 km) |
| Haverhill to Ochtrup | 286.26 mi (460.68 km) |
| Haverhill to Odenthal | 295.68 mi (475.85 km) |
| Haverhill to Oelde | 328.57 mi (528.79 km) |
| Haverhill to Oelsnitz | 519.40 mi (835.89 km) |
| Haverhill to Oer-Erkenschwick | 292.08 mi (470.05 km) |
