Go to the start of the route and open the web page on your mobile. Click on the full screen icon -- - Next click on the geo location icon -- .- Now follow the route on your phone.
If you get a Geolocation Error
On an iPhone go to >Settings>Privacy>Location Services select the appropriate web browser and change from Never.
On an Android Swipe down from the top of the screen. Touch and hold Location . If you don't find Location : Tap Edit or Settings . Then drag Location into your Quick Settings. Tap App permission. Under ”Allowed all the time," “Allowed only while in use,” and “Ask every time,” find the apps that can use your phone's location.