| Willowbrook to Olivares | 5,856.57 mi (9,425.24 km) |
| Willowbrook to Olivenza | 5,761.11 mi (9,271.60 km) |
| Willowbrook to Olot | 5,978.49 mi (9,621.45 km) |
| Willowbrook to Onate | 5,755.54 mi (9,262.65 km) |
| Willowbrook to Onda | 5,980.29 mi (9,624.35 km) |
| Willowbrook to Onteniente | 6,020.22 mi (9,688.61 km) |
| Willowbrook to Orihuela | 6,041.07 mi (9,722.16 km) |
| Willowbrook to Osuna | 5,909.03 mi (9,509.66 km) |
| Willowbrook to Ourense | 5,573.04 mi (8,968.94 km) |
| Willowbrook to Oviedo | 5,609.00 mi (9,026.81 km) |
| Willowbrook to Paiporta | 5,999.33 mi (9,654.98 km) |
| Willowbrook to Pajara | 5,874.96 mi (9,454.84 km) |
| Willowbrook to Palafolls | 6,012.92 mi (9,676.86 km) |
| Willowbrook to Palafrugell | 6,015.96 mi (9,681.76 km) |
| Willowbrook to Palamos | 6,018.20 mi (9,685.36 km) |
