| Spring Lake to Orbetello | 4,646.85 mi (7,478.39 km) |
| Spring Lake to Oria | 5,001.95 mi (8,049.86 km) |
| Spring Lake to Oristano | 4,606.39 mi (7,413.27 km) |
| Spring Lake to Orta Nova | 4,886.37 mi (7,863.86 km) |
| Spring Lake to Orte | 4,699.05 mi (7,562.39 km) |
| Spring Lake to Ortona | 4,792.78 mi (7,713.23 km) |
| Spring Lake to Orvieto | 4,678.28 mi (7,528.97 km) |
| Spring Lake to Orzinuovi | 4,498.14 mi (7,239.06 km) |
| Spring Lake to Osimo | 4,714.33 mi (7,586.99 km) |
| Spring Lake to Ospitaletto | 4,499.60 mi (7,241.40 km) |
| Spring Lake to Ostuni | 4,991.28 mi (8,032.68 km) |
| Spring Lake to Ottaviano | 4,847.44 mi (7,801.21 km) |
| Spring Lake to Ovada | 4,464.07 mi (7,184.23 km) |
| Spring Lake to Ozieri | 4,604.26 mi (7,409.85 km) |
| Spring Lake to Paceco | 4,856.67 mi (7,816.06 km) |
