| Hackettstown to Orangevale (California) | 2,439.44 mi (3,925.89 km) |
| Hackettstown to Orchards (Washington) | 2,387.13 mi (3,841.72 km) |
| Hackettstown to Orcutt (California) | 2,492.90 mi (4,011.93 km) |
| Hackettstown to Oregon (Ohio) | 450.25 mi (724.61 km) |
| Hackettstown to Oregon (Wisconsin) | 761.60 mi (1,225.68 km) |
| Hackettstown to Oregon City (Oregon) | 2,394.11 mi (3,852.95 km) |
| Hackettstown to Orem (Utah) | 1,921.03 mi (3,091.59 km) |
| Hackettstown to Orinda (California) | 2,506.90 mi (4,034.46 km) |
| Hackettstown to Orland Park (Illinois) | 678.74 mi (1,092.33 km) |
| Hackettstown to Orlando (Florida) | 931.05 mi (1,498.37 km) |
| Hackettstown to Ormond Beach (Florida) | 873.09 mi (1,405.10 km) |
| Hackettstown to Oro Valley (Arizona) | 2,070.97 mi (3,332.90 km) |
| Hackettstown to Oroville (California) | 2,439.44 mi (3,925.91 km) |
| Hackettstown to Oshkosh (Wisconsin) | 732.81 mi (1,179.35 km) |
| Hackettstown to Oskaloosa (Iowa) | 926.79 mi (1,491.52 km) |
