| Halikko to Olivenza | 1,985.86 mi (3,195.93 km) |
| Halikko to Olot | 1,527.16 mi (2,457.72 km) |
| Halikko to Onate | 1,601.62 mi (2,577.56 km) |
| Halikko to Onda | 1,729.43 mi (2,783.25 km) |
| Halikko to Onteniente | 1,807.90 mi (2,909.54 km) |
| Halikko to Orihuela | 1,861.65 mi (2,996.03 km) |
| Halikko to Osuna | 2,018.74 mi (3,248.85 km) |
| Halikko to Ourense | 1,796.69 mi (2,891.49 km) |
| Halikko to Oviedo | 1,679.78 mi (2,703.35 km) |
| Halikko to Paiporta | 1,766.02 mi (2,842.13 km) |
| Halikko to Pajara | 2,805.28 mi (4,514.65 km) |
| Halikko to Palafolls | 1,552.59 mi (2,498.66 km) |
| Halikko to Palafrugell | 1,527.74 mi (2,458.66 km) |
| Halikko to Palamos | 1,532.95 mi (2,467.05 km) |
| Halikko to Palencia | 1,719.08 mi (2,766.60 km) |
