Play the animation

in the Transport Controls window, click on the Action timeline and then press Ctrl-Shift-A to frame the animation on the Action timeline to its full length of 24 frames.
Click Loop (A), then click Play.

Animation framed A. Loop option

As the animation plays, each loop shows a full walk cycle.

In your animation, the movement may be a bit choppy, and the feet may slide on the floor. You can smooth your movement by adjusting the animation’s function curves in the FCurves window.

Summary

In this tutorial, you created poses on a character, set keyframes of these poses at different points, and created a walk cycle.

NoteYou can also create a loop if you want to create a walk cycle using the Story window.

In the next tutorial, Retargeting Character Animation, you retarget animation and a Character Extension from one character to another.