| Harlau to Olivenza | 1,803.24 mi (2,902.04 km) |
| Harlau to Olot | 1,244.97 mi (2,003.58 km) |
| Harlau to Onate | 1,449.87 mi (2,333.34 km) |
| Harlau to Onda | 1,443.15 mi (2,322.53 km) |
| Harlau to Onteniente | 1,499.57 mi (2,413.33 km) |
| Harlau to Orihuela | 1,542.71 mi (2,482.75 km) |
| Harlau to Osuna | 1,764.41 mi (2,839.54 km) |
| Harlau to Ourense | 1,723.28 mi (2,773.35 km) |
| Harlau to Oviedo | 1,601.68 mi (2,577.65 km) |
| Harlau to Paiporta | 1,468.98 mi (2,364.09 km) |
| Harlau to Pajara | 2,554.34 mi (4,110.81 km) |
| Harlau to Palafolls | 1,248.44 mi (2,009.17 km) |
| Harlau to Palafrugell | 1,221.77 mi (1,966.25 km) |
| Harlau to Palamos | 1,225.54 mi (1,972.32 km) |
| Harlau to Palencia | 1,576.68 mi (2,537.41 km) |
