To provide a runway for a running toy which is superior in saving space and capable of reducing manufacturing cost.

A foldable sheet member is folded along folding lines 5 to form a runway part 2 at the center along the direction of its length and wall parts along both sides of the runway part 2. The first slit part 6 is formed downward from the upper end at one side of the wall part 3 and the second slit part 7 is formed upward from the bottom end at the other side of the wall part 3. The second slit part 7 is engaged with the first slit part 6 to connect a plurality of the runways 1 one after another.