Quick tips on reading kanji

Hi Reddit,

Im currently learnimg how to read kanji via an app I purchase that is split from N5 to N1.

I have some progress in remembering and practicing individual Kanjis but I do ran into some problem when theyre connected together.

So attached photo reads by individually
North Sea Route/road.

So Basically Hokkaido as per google translation(manually input kanji on google). Is there a way to remember how theyre read or I have to memorize the words (combination)? Any tips you use to learn how theyre properly read?

by Alternative-Pack3121