Jeff,
SW Norway fjords & mountains--exquisite scenery & riding.
FRA-->Hirtshals DK is most direct--yes, boring--route, Google maps 1000mi/ 9 hrs direct autobahn, doable in 1 riding day, more comfortably 2 riding days.
Hirtshals DK-->Kristiansand NO, take "Superspeed" hydrofoil car ferry,
Color Line - The easiest way to Norway!, 3 hrs.
Roundtrip transit FRA-Hirtshals 4-5 days, leaves ~ 15 days to enjoy SW Norway
leisurely.
SW Norway means anything within Ksand, Stavanger, Bergen, Andsnes, Trondheim, Oslo perimeter. You could ride north of Trondheim, e.g., to Lofoten Islands, another exquisite venue, but adds considerable to roundtrip time.
Camping and "hytter," (comfortable Norwegian camping cabins) are everywhere; also a good network of hostels.
Norway is primarily for non-urban scenery & riding, not "active, lively" destinations. You can find plenty of "active lively" in major cities, e.g. Bergen, Oslo, but outside cities, smaller towns are just that.
Weather/ rain in June in Norway can be "risky." You may get all wonderful sunshine, you could get a lot of rain, or a mix.
If you opt for Norway, there are many detailed routing/ ride report threads here or at
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You already know how beautiful your other itinerary options are.
It would actually be feasible to
wait until you arrive FRA, and decide on which itinerary depending on short(er)-medium term weather forecast at that time.
Enjoy whichever you choose