A weight sled apparatus useful for strength training and simulating the resistance of an opponent during a blocking event has a tubular construction forming a U-shaped member having a pair of parallel legs which serve as runners. A weight bearing member affixed to and extending between the pair of runners allows mounting of removable mount weights on a horn projecting therefrom. A crossbar extending between the runner ends presents a rearward facing surface at least 8 inches above the plane of the runners against which force may be applied. An optional handlebar attachment presents a rearward facing surface against which force may applied in a range from 8 inches to 40 inches above the plane of the runners and normal thereto. The weight sled affords a trainee multiple force application surfaces near the center of gravity of the sled and at differing vertical heights, enabling a more realistic simulation of the resistance presented during a blocking event.