| Humacao to Olivares | 3,815.45 mi (6,140.37 km) |
| Humacao to Olivenza | 3,769.69 mi (6,066.74 km) |
| Humacao to Olot | 4,283.93 mi (6,894.31 km) |
| Humacao to Onate | 4,037.00 mi (6,496.93 km) |
| Humacao to Onda | 4,138.86 mi (6,660.85 km) |
| Humacao to Onteniente | 4,119.58 mi (6,629.83 km) |
| Humacao to Orihuela | 4,100.89 mi (6,599.74 km) |
| Humacao to Osuna | 3,872.48 mi (6,232.16 km) |
| Humacao to Ourense | 3,756.91 mi (6,046.16 km) |
| Humacao to Oviedo | 3,867.33 mi (6,223.87 km) |
| Humacao to Paiporta | 4,130.13 mi (6,646.81 km) |
| Humacao to Pajara | 3,333.11 mi (5,364.12 km) |
| Humacao to Palafolls | 4,297.31 mi (6,915.86 km) |
| Humacao to Palafrugell | 4,318.50 mi (6,949.96 km) |
| Humacao to Palamos | 4,316.77 mi (6,947.17 km) |
