Interesting. My 95-year old mother lives in a retirement home. They are "walking to Alaska". My mom does her part doing one mile a day. They have "routes" both inside down the halls with markers every 0.1 miles, and one loop outdoors around a duck pond. They add up everyone's walk and plot it on a map. Many of the residents do the walk in their walkers. It really is a motivator to get the older people moving. I thought it was a great idea.