| Hackettstown to Robertsville (New Jersey) | 45.19 mi (72.73 km) |
| Hackettstown to Robinson (Texas) | 1,397.60 mi (2,249.23 km) |
| Hackettstown to Robstown (Texas) | 1,577.46 mi (2,538.67 km) |
| Hackettstown to Rochester (Michigan) | 445.55 mi (717.04 km) |
| Hackettstown to Rochester (Minnesota) | 924.31 mi (1,487.54 km) |
| Hackettstown to Rochester (New Hampshire) | 259.68 mi (417.92 km) |
| Hackettstown to Rochester (New York) | 214.65 mi (345.44 km) |
| Hackettstown to Rochester Hills (Michigan) | 446.99 mi (719.37 km) |
| Hackettstown to Rock Hill (South Carolina) | 529.87 mi (852.75 km) |
| Hackettstown to Rock Island (Illinois) | 819.60 mi (1,319.02 km) |
| Hackettstown to Rock Springs (Wyoming) | 1,776.25 mi (2,858.61 km) |
| Hackettstown to Rockford (Illinois) | 741.64 mi (1,193.56 km) |
| Hackettstown to Rockledge (Florida) | 928.35 mi (1,494.04 km) |
| Hackettstown to Rocklin (California) | 2,438.24 mi (3,923.97 km) |
| Hackettstown to Rockport (Texas) | 1,539.27 mi (2,477.22 km) |
