| Hammonton to Orbetello | 4,279.23 mi (6,886.76 km) |
| Hammonton to Oria | 4,632.62 mi (7,455.49 km) |
| Hammonton to Oristano | 4,246.74 mi (6,834.47 km) |
| Hammonton to Orta Nova | 4,517.18 mi (7,269.69 km) |
| Hammonton to Orte | 4,330.44 mi (6,969.18 km) |
| Hammonton to Ortona | 4,422.78 mi (7,117.78 km) |
| Hammonton to Orvieto | 4,309.39 mi (6,935.29 km) |
| Hammonton to Orzinuovi | 4,125.76 mi (6,639.78 km) |
| Hammonton to Osimo | 4,342.98 mi (6,989.36 km) |
| Hammonton to Ospitaletto | 4,126.85 mi (6,641.52 km) |
| Hammonton to Ostuni | 4,621.58 mi (7,437.72 km) |
| Hammonton to Ottaviano | 4,480.22 mi (7,210.21 km) |
| Hammonton to Ovada | 4,093.99 mi (6,588.63 km) |
| Hammonton to Ozieri | 4,242.61 mi (6,827.82 km) |
| Hammonton to Paceco | 4,497.43 mi (7,237.91 km) |
