Family of four with hiking teenagers looking for recommendations for a short trip through Swiss Alps. I already know this is not much time.
Option 1
Morning Flight from Paris to Bern
Train to Interlaken stay for 2 nights in Wengen and hike around Lauterbrunnen
Train to Chur for Bernina Express to Tirano
Train Tirano to Varenna
Option 2
Morning Flight from Paris to Bern
Train to Interlaken stay for 1 night in Wengen and hike around Lauterbrunnen
Train to Chur for Bernina Express to Tirano
Step off and stay along the route 1 night
I like the idea of the regional trains using the same route and don't necessarily need to spend the entire time on the scenic train
Train Tirano to Varenna
Con: short time in Interlaken and Lauterbrunnen with most of the time will be spent travelling by air/train (excluding the Bernina which is the point)
Possible Pro: Is there some amazing Alps Village we could step off and stay with great day hikes
Option 3
Not married to Lauterbrunnen
I am open to suggestions