The reported walk distance measured is way out. On my set up over roads, I walked a known distance (taken from an OS map) of about 1500m and the app told me I had only done 950m. I changed from m to miles but it did not correct itself. Tried again today on a different walk and the same happened. It seems to be out by the conversion from km to miles (about 0.625), co-incidence? Anyway surprisingly my cheap wrist worn fitness monitor gives a much more accurate estimate of distance walked so I'm going to use that. Although the route walked map was nice, I have deleted the app since I wanted a fairly accurate distance walked reading and this app apparently cannot give me that.