| Skokie to Orbetello | 4,732.67 mi (7,616.49 km) |
| Skokie to Oria | 5,073.70 mi (8,165.33 km) |
| Skokie to Oristano | 4,731.91 mi (7,615.27 km) |
| Skokie to Orta Nova | 4,960.34 mi (7,982.90 km) |
| Skokie to Orte | 4,778.77 mi (7,690.68 km) |
| Skokie to Ortona | 4,863.36 mi (7,826.82 km) |
| Skokie to Orvieto | 4,756.70 mi (7,655.16 km) |
| Skokie to Orzinuovi | 4,558.42 mi (7,336.07 km) |
| Skokie to Osimo | 4,777.94 mi (7,689.35 km) |
| Skokie to Ospitaletto | 4,557.53 mi (7,334.64 km) |
| Skokie to Ostuni | 5,061.03 mi (8,144.94 km) |
| Skokie to Ottaviano | 4,932.77 mi (7,938.52 km) |
| Skokie to Ovada | 4,538.62 mi (7,304.20 km) |
| Skokie to Ozieri | 4,720.59 mi (7,597.06 km) |
| Skokie to Paceco | 4,980.95 mi (8,016.06 km) |
