Abstract: A utility loader incorporating a boom of adjustable length. The boom includes either or both of a left and right arm assembly, with each lift arm assembly including a rear lift arm telescopingly engaged with a front lift arm. Each lift arm assembly also includes an extension actuator adapted to variably extend and retract the front lift arm relative to the rear lift arm. The lift arm assembly includes a connection point to, e.g., receive a tool assembly, and the motion of the lift arm assembly is synchronized to move the connection point along a predetermined path. In one or more embodiments, the predetermined path includes moving along a direction that is normal to the ground surface.