I did this one not too long ago.

As an alternative you could pillowcase the runners. If you edge stitch carefully they come out well. I often do this when making runners for church fair - can’t invest too much time since people are not willing to pay for time invested and few know the difference between bound or simply turned. Just an idea.

This is exactly what I was thinking, birth the runner, then quilt it. No need to futz around trying to get the binding just right. And because this is a small runner it should work out much easier than trying to do the two color binding.

I do it all the time. I simply sew two strips together, press the seam open, sew to another strip and fold in half, sew on quilt as usual.

You can do it but having the 2 small pieces sewn together, folded, and attached could be tricky. Why not just birth the runner and using a decorative stitch and 2 colors thread, topstitch in about 1/2"? This would give it a binding look but be a whole lot easier.

I usually use this method when I don't have enough fabric to make the regular binding. Follow the instructions as per www.instructables and you will do well. Save a left over piece on which you have marked the sizes for future reference.

I have done it on several quilts. Written instructions I found by putting in 2 color binding for my search. I used
www.evergreenquiltersguild.com - very straight forward. The instructables link I see has pictures but as I said
the written instructions were very clear on how to do it.

all this talk of two color binding made me decide to do that with my current quilt in progress. But I forgot!! already cut the binding 2 1/2 inches. oh well the splotchy yellow fabric will work for both sides.

Cut stripes on the diagonal; they make really neat bindings.

I Have done it on several table runners. Works well. I just know one strip is smaller than the other. Forgot the measurements but it can be done . Good luck