The Ukrainian Armed Forces will themselves determine the range of application of HIMARS multiple rocket launchers, which Kyiv will soon receive.
Source: US Ambassador to Ukraine Bridget Brink
“As President Biden announced yesterday, a $700 million security assistance package had been signed. This includes HIMARS long-range rocket systems. This will help Ukrainian forces to aim more accurately, but also have a longer range. The exact range will be determined by the Ukrainian forces.”
Both Ukraine and Russia already operate MLRS, but Himars has superior range and precision.
The HIMARS that Washington is providing to Ukraine will have a range of about 50 miles (80km). Ukrainian forces will be trained for about three weeks to learn how to use High Mobility Artillery Rocket Systems.
Uaposition memo: The M142 Himars system (High Mobility Artillery Rocket System) is a modernized, lighter and more agile wheel-mounted version of the track-mounted M270 MLRS developed in the 1970s for US and allied forces.
See also: US has agreed on a new package of military assistance to Ukraine, including HIMARS missile systems