I simply cut out the portion I wanted to use for a runner, like this:
Then I removed everything but the contrasting weaving, so it looks like this:
What remains of the weaving will hold itself together as long I’m careful with it. There’s enough remaining of the place mat that I can make other mats or window coverings. Talk about a quick, simple, inexpensive craft project! It’s going to look great in my mini dining or living room!