A pair of lift carriages for supporting spacedly over ground, in a removable fashion, the front guiding skis of a snowmobile. Each carriage includes a frame, movably mounted over ground by tires, and a lever arm pivoted to the frame about an axis parallel to the rolling direction of the tires. The frame and the lever arm comprise hooks, to grasp and fixedly secure the ski when the lever arm is manually operated in an opertive position. The length of the hook is adjustable, so as to adapt itself to snowmobile skis of various widths. A look releasably locks the lever arm in its operative position.