Double interlaced running stitch is an attractive line of humps.
Work two rows of running stitch. Lace or thread the stitches with a contrasting colour or weight of thread. You can also thread a fine ribbon through the running stitch foundation.
Use a tapestry needle to avoid splitting the foundation running stitch. With this stitch, take care to lace and not to pick up any of the fabric.
If you are interested in crazy quilting and want to further decorate this stitch it is fun to work with a bead or a French knot placed between each hump.
There are many varieties of running stitch. You will find a few here: Running Stitch, Interlaced Running Stitch, Interlaced Double Running Stitch No 1, Interlaced Double Running Stitch No 2, Interlaced Double Running Stitch No 3, Stepped Threaded Running Stitch (version 1), Stepped Threaded Running Stitch (version 2), Threaded Running Stitch, Whipped Running Stitch