| Hackettstown to Oststeinbek | 3,839.69 mi (6,179.38 km) |
| Hackettstown to Ottendorf-Okrilla | 4,049.85 mi (6,517.60 km) |
| Hackettstown to Ottersberg | 3,813.71 mi (6,137.57 km) |
| Hackettstown to Ottobrunn | 4,064.89 mi (6,541.81 km) |
| Hackettstown to Ottweiler | 3,841.27 mi (6,181.92 km) |
| Hackettstown to Overath | 3,801.56 mi (6,118.02 km) |
| Hackettstown to Oyten | 3,809.76 mi (6,131.22 km) |
| Hackettstown to Paderborn | 3,837.23 mi (6,175.43 km) |
| Hackettstown to Papenburg | 3,747.81 mi (6,031.52 km) |
| Hackettstown to Parchim | 3,905.68 mi (6,285.58 km) |
| Hackettstown to Pasewalk | 3,983.41 mi (6,410.68 km) |
| Hackettstown to Passau | 4,120.82 mi (6,631.82 km) |
| Hackettstown to Pattensen | 3,860.80 mi (6,213.35 km) |
| Hackettstown to Pegnitz | 4,005.94 mi (6,446.93 km) |
| Hackettstown to Peine | 3,877.18 mi (6,239.72 km) |
