A
convertible trailer and stroller having, a pair of frame blocks
mount to a frame member of a jogging stroller, each
proximate the two rear wheels of the jogging stroller. The frame blocks are each attached to a wheel block at a wheel pivot that interconnect the frame blocks to their respective wheel blocks. A pair of wheels having hub axle ends are received into a wheel bearing within each of the wheel blocks, and the wheel blocks are rotatable about the respective block pivots to selectably raise or lower each wheel relative to the block pivots. In the lowered wheel, or stroller configuration, a high ground clearance for all
terrain operation is provided, while in the raised wheel or trailer configuration, a low and stable center of gravity is provided. The
convertible trailer and stroller can also include an upper bar that attaches to the wheel blocks. The upper bar converts from a
handle bar position to a roll bar position as functions of the pivotable rotations of the wheel blocks about the frame blocks. The
handle bar position provides a push or pull point in the stroller configuration, while the roll bar position operates in the trailer configuration to provide protection to a passenger in a tip over.