u/DeHereICome

Can anyone recommend walking routes which start in the centre of Helsinki and take you out to some countryside or a coastal route? I do not mind if it obviously has to pass through some less interesting urban areas at points. Maybe something like 2-3 hours there and 2-3 hours back? I would prefer just to go by foot and not have to negotiate bus/train, but I would not mind using the metro to help me get out of town a little bit.