| Hilo to Olivares | 8,003.78 mi (12,880.83 km) |
| Hilo to Olivenza | 7,902.06 mi (12,717.14 km) |
| Hilo to Olot | 7,928.67 mi (12,759.95 km) |
| Hilo to Onate | 7,767.89 mi (12,501.21 km) |
| Hilo to Onda | 8,007.50 mi (12,886.82 km) |
| Hilo to Onteniente | 8,069.61 mi (12,986.79 km) |
| Hilo to Orihuela | 8,106.42 mi (13,046.03 km) |
| Hilo to Osuna | 8,045.24 mi (12,947.57 km) |
| Hilo to Ourense | 7,668.98 mi (12,342.02 km) |
| Hilo to Oviedo | 7,663.31 mi (12,332.91 km) |
| Hilo to Paiporta | 8,036.86 mi (12,934.08 km) |
| Hilo to Pajara | 8,217.76 mi (13,225.20 km) |
| Hilo to Palafolls | 7,966.54 mi (12,820.91 km) |
| Hilo to Palafrugell | 7,959.02 mi (12,808.80 km) |
| Hilo to Palamos | 7,962.90 mi (12,815.05 km) |
