| Walnut Park to Olivares | 5,853.80 mi (9,420.77 km) |
| Walnut Park to Olivenza | 5,758.31 mi (9,267.11 km) |
| Walnut Park to Olot | 5,975.48 mi (9,616.60 km) |
| Walnut Park to Onate | 5,752.58 mi (9,257.88 km) |
| Walnut Park to Onda | 5,977.36 mi (9,619.63 km) |
| Walnut Park to Onteniente | 6,017.32 mi (9,683.95 km) |
| Walnut Park to Orihuela | 6,038.19 mi (9,717.52 km) |
| Walnut Park to Osuna | 5,906.24 mi (9,505.17 km) |
| Walnut Park to Ourense | 5,570.16 mi (8,964.31 km) |
| Walnut Park to Oviedo | 5,606.07 mi (9,022.10 km) |
| Walnut Park to Paiporta | 5,996.41 mi (9,650.29 km) |
| Walnut Park to Pajara | 5,872.61 mi (9,451.05 km) |
| Walnut Park to Palafolls | 6,009.91 mi (9,672.02 km) |
| Walnut Park to Palafrugell | 6,012.94 mi (9,676.90 km) |
| Walnut Park to Palamos | 6,015.19 mi (9,680.50 km) |
