| Skokie to Olivares | 4,176.94 mi (6,722.13 km) |
| Skokie to Olivenza | 4,086.70 mi (6,576.90 km) |
| Skokie to Olot | 4,381.98 mi (7,052.11 km) |
| Skokie to Onate | 4,140.05 mi (6,662.77 km) |
| Skokie to Onda | 4,347.76 mi (6,997.05 km) |
| Skokie to Onteniente | 4,376.26 mi (7,042.91 km) |
| Skokie to Orihuela | 4,389.47 mi (7,064.16 km) |
| Skokie to Osuna | 4,232.36 mi (6,811.33 km) |
| Skokie to Ourense | 3,924.98 mi (6,316.64 km) |
| Skokie to Oviedo | 3,979.59 mi (6,404.53 km) |
| Skokie to Paiporta | 4,361.39 mi (7,018.99 km) |
| Skokie to Pajara | 4,136.10 mi (6,656.41 km) |
| Skokie to Palafolls | 4,412.95 mi (7,101.96 km) |
| Skokie to Palafrugell | 4,420.88 mi (7,114.72 km) |
| Skokie to Palamos | 4,422.21 mi (7,116.86 km) |
