| Hackettstown to Orthez | 3,666.32 mi (5,900.37 km) |
| Hackettstown to Orvault | 3,526.29 mi (5,675.02 km) |
| Hackettstown to Osny | 3,638.37 mi (5,855.39 km) |
| Hackettstown to Ostwald | 3,887.71 mi (6,256.66 km) |
| Hackettstown to Ouistreham | 3,535.19 mi (5,689.34 km) |
| Hackettstown to Oullins | 3,849.55 mi (6,195.25 km) |
| Hackettstown to Outreau | 3,577.54 mi (5,757.49 km) |
| Hackettstown to Oyonnax | 3,869.87 mi (6,227.96 km) |
| Hackettstown to Ozoir-la-Ferriere | 3,671.69 mi (5,909.01 km) |
| Hackettstown to Pace | 3,498.03 mi (5,629.54 km) |
| Hackettstown to Palaiseau | 3,655.09 mi (5,882.31 km) |
| Hackettstown to Pamiers | 3,785.61 mi (6,092.36 km) |
| Hackettstown to Panazol | 3,692.98 mi (5,943.28 km) |
| Hackettstown to Pantin | 3,656.86 mi (5,885.14 km) |
| Hackettstown to Paray-le-Monial | 3,797.93 mi (6,112.17 km) |
