| Hercules to Olivares | 5,826.83 mi (9,377.37 km) |
| Hercules to Olivenza | 5,728.53 mi (9,219.18 km) |
| Hercules to Olot | 5,898.57 mi (9,492.84 km) |
| Hercules to Onate | 5,687.83 mi (9,153.68 km) |
| Hercules to Onda | 5,919.15 mi (9,525.95 km) |
| Hercules to Onteniente | 5,965.25 mi (9,600.14 km) |
| Hercules to Orihuela | 5,990.51 mi (9,640.79 km) |
| Hercules to Osuna | 5,876.59 mi (9,457.46 km) |
| Hercules to Ourense | 5,525.46 mi (8,892.36 km) |
| Hercules to Oviedo | 5,550.41 mi (8,932.51 km) |
| Hercules to Paiporta | 5,941.05 mi (9,561.19 km) |
| Hercules to Pajara | 5,916.02 mi (9,520.91 km) |
| Hercules to Palafolls | 5,934.28 mi (9,550.30 km) |
| Hercules to Palafrugell | 5,934.89 mi (9,551.29 km) |
| Hercules to Palamos | 5,937.55 mi (9,555.56 km) |
