| Haverhill to Olivares | 1,062.40 mi (1,709.77 km) |
| Haverhill to Olivenza | 993.87 mi (1,599.48 km) |
| Haverhill to Olot | 690.55 mi (1,111.33 km) |
| Haverhill to Onate | 638.97 mi (1,028.32 km) |
| Haverhill to Onda | 837.91 mi (1,348.48 km) |
| Haverhill to Onteniente | 917.40 mi (1,476.42 km) |
| Haverhill to Orihuela | 969.24 mi (1,559.84 km) |
| Haverhill to Osuna | 1,060.54 mi (1,706.78 km) |
| Haverhill to Ourense | 776.74 mi (1,250.04 km) |
| Haverhill to Oviedo | 668.98 mi (1,076.62 km) |
| Haverhill to Paiporta | 875.14 mi (1,408.41 km) |
| Haverhill to Pajara | 1,802.41 mi (2,900.71 km) |
| Haverhill to Palafolls | 727.45 mi (1,170.71 km) |
| Haverhill to Palafrugell | 713.66 mi (1,148.53 km) |
| Haverhill to Palamos | 718.26 mi (1,155.93 km) |
