Welcome to 100Mandalas.com and the home of the 100 Mandalas Challenge & Community hosted by Kathryn Costa. If you are interested in drawing, coloring, or working with mandalas, then you’ve arrived at the right place! Are you new to the 100 Mandalas Challenge? You may want to start with these links: What is a mandala? Videos on how-to draw and color mandalas. About the 100 Mandalas Challenge. Get my book, “The Mandala Guidebook.” PLUS two free thank you gifts! Free Coloring Book Join Our Community Have fun exploring the many pages on this site. Each week there is something new to inspire your mandala practice. Don’t miss out! Subscribe to the weekly e-mail newsletter.