I use Android and chrome to view this website. The problem is when I move the distance slider on the marketplace the page crashes or goes NaN.
I recommend a combo box or input box for distance on mobile.
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Your browser/os information:
Mozilla/5.0 (Linux; Android 5.1.1; SCH-I605 Build/LMY49J) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.89 Mobile Safari/537.36 (this will help us make sense of your bug report)