How do i start navigation during activity that is alrady running

Hi,

So my question is: 
Lets say i've started cyling/mtb activity and i'm well into just riding along the track, but at some point i could use the (saved on the watch alread navigation/course of the track i'm riding - as i'm not sure where to go).

Is there a way to start course navigation inside already working activity - ie. watch would load map and start navigation from where i am.


Is this possible??

thank you