E bike routes in Lauterbrunnen Valley vs Grindelwald area for novices?

I am not a cyclist but have walked the trail between First and Grosse Scheidegg many times. It is an easy road called the Panorama Trail. We always walk from First to Grosse Scheidegg which is generally downhill. Not sure I’d treasure doing it in reverse as the last kilometer is a bit steep. Here is the map I include in my book https://www.plotaroute.com/route/983381. Note the elevation.

You can see the route here including map, photos and description. This will be a very challenging bike ride!

https://schweizmobil.ch/en/mountainbiking-in-switzerland/route-341

The rating is Difficult for both the route as well as the fitness level needed. Here is the general description of routes that are labeled difficult:

The route is suitable for advanced mountain biking experts with plenty
of experience and good riding technique. It includes technically
challenging sections on loose surfaces, with tight turns or hairpin
bends, steep ramps, high steps or partially blocked terrain. Obstacles
and long bike pushing/carrying passages are possible. Dangerous spots,
exposed sections and mountain-specific hazards are frequent.

For the fitness rating, they are basing it on a regular mountain bike, not e-bike, but keep in mind that even though you have motorised assistance, you still have to work very hard with an e-bike to accomplish these kind of ascents.

You can choose to do just part of the route, such as Grindelwald to Grosse Scheidegg on the paved road. You will still ascend about 928m over a duration of 10km, so you will be sweating for sure, but you will not have to focus on technique.

Some easier but still very scenic routes:

• Cycle #61 from Grindelwald to Interlaken, then do the #380 circular route and back to Grindelwald

https://schweizmobil.ch/en/cycling-in-switzerland/route-61/stage-2

https://schweizmobil.ch/en/cycling-in-switzerland/route-380
- Do all or some of route #8 along the lake of Thun, or follow it in
the opposite direction to Meiringen
https://schweizmobil.ch/en/cycling-in-switzerland/route-9/stage-4
- Lauterbrunnen Valley is a very short ride, but you can combine it with one of the above, or cycle between Grindelwald and Stechelberg through the valleys rather than over the mountain routes.

Grindelwald First to Grosse Scheidegg is a single track mountain biking route and the road up to Grosse Scheidegg from Grindelwald is going to be more elevation than you want to do for a casual ride.

For 2 hours, just ride the entire Lauterbrunnen valley all the way to the back and return, with stops along the way for photos and maybe a picnic at the very back. That eats up a 2 hour rental.

For 4 hours, pay for the bike to go with you up to Grutschalp on the cable car, ride along the railroad road from Grutschalp > Winteregg > Mürren (explore the village) > ride down to Gimmelwald (paved road) > cable car down to Stechelberg and bike the valley back to Lauterbrunnen

Grindelwald to Grosse Scheidegg is a single track mountain biking route

This is a paved road, as is evident in the photos of the route, used by people with street bikes as well. Many serious cyclists come here. Road is shared with the Post Bus.

https://schweizmobil.ch/en/cycling-in-switzerland/route-61/stage-2

Sorry typo I meant Grindelwald FIRST not just Grindelwald. Was in a hurry, will fix in my post :)