The wiki's sources have a picture: https://www.cntraveler.com/story/more-than-half-the-worlds-p...

Perhaps you'd like to be the one to ask the graphic's author for permission to add it to Wikipedia, or you'd like to create a graphic to add yourself.

The DIAMETER of such an area is very roughly 12 percent of Earth's CIRCUMFERENCE. So you could (probably) lay 8 of these areas around the equator, give or take a a couple.