Since google maps only gives one route at one time therefore when I search second route first one get lost. I want to search multiple routes simultaneously such that both routes get displayed simultneously.
I think this resolves your problem.You can search multiple routes between user-defined source and destination. Distance and duration is also available on the fly with each and every route. The App is rich in features and easy to use. You can also search "Routes Companion" on Youtube for interesting description of an App.