To improve the degree of freedom in the layout of a rail by adjusting a length of the rail X by rotatably connecting plural rail members A as minimum units, and allowing straight rails to cope with a curved rail having various curvatures.

This rail member S for traveling a model vehicle 50 has a first connecting part 2, a second connecting part 3 connected to the first connecting part 2 of another adjacent rail member B, and a flexible guide part 4 guiding the model vehicle 50, and expanding and contracting corresponding to a rotating angle of the first connecting part 2 and the second connecting part 3, and the rail X is formed by connecting plural rail members A.