Here is a full tutorial serie I've recorded showing you the whole process to create a run cycle in blender with curve matching. I hope to be able to record more tutorials in this way.
If you complete this tutorial, I'd like you to post your WIP and animations here so that you can get feedback from the community.
The animation was done with the help of Luciano Munoz who provided the rig and some nice feedback.
You get the full tutorial for free (but I won't mind if you buy me a coffee).