| Haverhill to Oerlinghausen | 349.67 mi (562.73 km) |
| Haverhill to Oestrich-Winkel | 358.28 mi (576.60 km) |
| Haverhill to Offenburg | 414.17 mi (666.54 km) |
| Haverhill to Oftersheim | 402.11 mi (647.13 km) |
| Haverhill to Ohrdruf | 451.11 mi (725.99 km) |
| Haverhill to Ohringen | 443.65 mi (713.98 km) |
| Haverhill to Olbernhau | 563.82 mi (907.39 km) |
| Haverhill to Olching | 550.43 mi (885.83 km) |
| Haverhill to Oldenburg | 334.15 mi (537.76 km) |
| Haverhill to Oldenburg in Holstein | 458.21 mi (737.42 km) |
| Haverhill to Olfen | 296.97 mi (477.93 km) |
| Haverhill to Olpe | 325.89 mi (524.47 km) |
| Haverhill to Olsberg | 347.81 mi (559.75 km) |
| Haverhill to Oranienburg | 540.56 mi (869.94 km) |
| Haverhill to Ortenberg | 391.14 mi (629.47 km) |
