| Suffolk to Orbetello | 4,478.84 mi (7,208.00 km) |
| Suffolk to Oria | 4,833.86 mi (7,779.35 km) |
| Suffolk to Oristano | 4,439.08 mi (7,144.00 km) |
| Suffolk to Orta Nova | 4,718.29 mi (7,593.35 km) |
| Suffolk to Orte | 4,530.99 mi (7,291.92 km) |
| Suffolk to Ortona | 4,624.67 mi (7,442.68 km) |
| Suffolk to Orvieto | 4,510.21 mi (7,258.48 km) |
| Suffolk to Orzinuovi | 4,330.00 mi (6,968.47 km) |
| Suffolk to Osimo | 4,546.19 mi (7,316.39 km) |
| Suffolk to Ospitaletto | 4,331.46 mi (6,970.81 km) |
| Suffolk to Ostuni | 4,823.18 mi (7,762.15 km) |
| Suffolk to Ottaviano | 4,679.46 mi (7,530.86 km) |
| Suffolk to Ovada | 4,295.96 mi (6,913.67 km) |
| Suffolk to Ozieri | 4,436.73 mi (7,140.23 km) |
| Suffolk to Paceco | 4,689.43 mi (7,546.91 km) |
