| Walnut to Olivares | 5,835.39 mi (9,391.15 km) |
| Walnut to Olivenza | 5,740.00 mi (9,237.64 km) |
| Walnut to Olot | 5,958.73 mi (9,589.64 km) |
| Walnut to Onate | 5,735.42 mi (9,230.26 km) |
| Walnut to Onda | 5,959.94 mi (9,591.59 km) |
| Walnut to Onteniente | 5,999.69 mi (9,655.56 km) |
| Walnut to Orihuela | 6,020.40 mi (9,688.90 km) |
| Walnut to Osuna | 5,887.90 mi (9,475.67 km) |
| Walnut to Ourense | 5,552.35 mi (8,935.64 km) |
| Walnut to Oviedo | 5,588.61 mi (8,994.01 km) |
| Walnut to Paiporta | 5,978.89 mi (9,622.09 km) |
| Walnut to Pajara | 5,852.48 mi (9,418.65 km) |
| Walnut to Palafolls | 5,993.11 mi (9,644.98 km) |
| Walnut to Palafrugell | 5,996.23 mi (9,650.00 km) |
| Walnut to Palamos | 5,998.46 mi (9,653.58 km) |
