| Half Moon Bay to Olivares | 5,859.89 mi (9,430.58 km) |
| Half Moon Bay to Olivenza | 5,761.73 mi (9,272.60 km) |
| Half Moon Bay to Olot | 5,934.08 mi (9,549.98 km) |
| Half Moon Bay to Onate | 5,722.77 mi (9,209.91 km) |
| Half Moon Bay to Onda | 5,953.82 mi (9,581.75 km) |
| Half Moon Bay to Onteniente | 5,999.64 mi (9,655.49 km) |
| Half Moon Bay to Orihuela | 6,024.69 mi (9,695.80 km) |
| Half Moon Bay to Osuna | 5,909.81 mi (9,510.92 km) |
| Half Moon Bay to Ourense | 5,559.39 mi (8,946.98 km) |
| Half Moon Bay to Oviedo | 5,584.89 mi (8,988.02 km) |
| Half Moon Bay to Paiporta | 5,975.59 mi (9,616.79 km) |
| Half Moon Bay to Pajara | 5,944.62 mi (9,566.94 km) |
| Half Moon Bay to Palafolls | 5,969.74 mi (9,607.37 km) |
| Half Moon Bay to Palafrugell | 5,970.46 mi (9,608.52 km) |
| Half Moon Bay to Palamos | 5,973.09 mi (9,612.76 km) |
