To provide a guide rail for travel capable of composing a runway at a curved part or a three-dimensional part as well as a straight part and achieving high precision in simple constitution.

This guide rail 1 is provided with roller guide parts 5 and 5 on both sides in the desired width. It is composed of a guide member 4 to form a main body of the roller guide part 5, and a support member 2 disposed and fixed on both sides in a width direction to be undetachable to hold the guide member 4 in such a way as to expose a part of it outward. The roller guide part 5 is formed of an exposed surface of the guide member 4 and side surface parts 2' and 2' of the support member 2.