<<"thanks Lucas,sorry for the late response,a few more questions if u dont mind
1. can we base ourselves in interlaken to see lake brienz and lake thun,is it worth to spend 1 and half days exploring interlaken and both the lakes considering we are mostly interested in nature ,easy strolls .
2.and then we will be going to gimmelwald from interlaken and then to jungfau and back to zurich for the return flight,">>
Hi Fenojleslie -
With your stated goal, I suggest that you would be better off staying in Lauterbrunnen, Wengen or Grindelwald or possibly Mürren.
The lake trip options are nice, but no where near as nice as some of the gentle hikes nearer the Jungfrau.
In my opinion, shared more politely by others on the forum, Interlaken itself is worth about an hour...add time for Harder Kulm. Interlaken is not scenic destination. I'd spend half a day on a boat ride on either Lake Thun or Lake Brienz. Both have some nice places to get off the boat and explore, with pleasant walks if you choose. That's because I believe that there are better scenic opportunities to appreciate nature nearer the Jungfrau.
Gimmelwald has nothing but a few houses and a whole bunch of tourists carrying Rick Steve's book. The views from there are nice, but there are a lot of similar views from other places, too.
You were not explicitly linked to the timetable. It will help you understand the times between locations:
Combine it with this map:
I have zoomed it in to zoom level 32, to show the rail lines clearly. Zoom out for the surroundings.
This report is by an experienced traveler who likes Wengen, but discusses other places.
I like Wengen, too, but Lauterbrunnen could be a better base for you, as Lucas noted. However, it is only 20 minutes by train from Wengen..
The pictures are taken on the easy and magnificent trail from Männlichen to Kleine Scheidegg, easily accessed from Wengen.