@Joaquin Thanks. Komoot does that mainly for staying on roads and trails, whereas with Suunto it would be more about adding missing elevation and TBT.
From what I’ve seen, only Komoot (online) – using the phone’s computing power – can generate a logical route.
Garmin is just okay at best. The Hammerhead Karoo is pretty weak. Google Maps, apart from driving, is rubbish. Mapy . com is okay at best. And I’m mostly talking about using the phone’s processing power and usually having an internet connection.
So I don’t know if it’s worth putting so much effort and resources into adding routing to Suunto watches, knowing it’s going to be very unreliable, except maybe in cities.