In the Jungfrau region:

From Grindelwald up to the First by gondola, then hike over to Grosse Scheidegg, down into Rosenlaui (stay there) then to Meiringen and the train.

From near Lauterbrunnen to the Lobhornhut - really nice day hike with spectacular views and a great farm with fresh cheese to buy along the way. Or stay there and continue on to Saxeten.

From Mürren (can take the tram from Lauterbrunnen, one valley over from Grindelwald) to over Sefinenfurge to Bundalp (place to stay), from there to the Blumlishorn hut (another night), then down to Kandersteg to the train. Quite a bit more ambitious but very nice.

With your train pass you could do the Bernina Express railroad, which is supposed to be one of the most beautiful train rides. I don't know if you can get off the train near the Diavolezza, if so the Munt Pers (3207m) is a fantastic viewpoint on to the Bernina group. This is an easy and short hike (especially if you take the cable car to the Diavolezza station) with very rewarding views.

Many options. To pick one, hike from Zermatt to the Schönbiel hut and stay overnight.

We made both of them last summer, easy hikes with wonderful views. Check these links in SP

Schynigge Platte to First via Faulhorn (Faulhornweg)http://www.summitpost.org/route/212719/schynige-platte.html

Grindelwald to Lauberhorn via Kleine Scheidegg
http://www.summitpost.org/route/217052/ ... grund.html

You could stay in Interlaken, take the train to Schynigge Platte tram station, hike from Schynigge Platte through to First, take the tram back down to the base or continue to Grosse Scheidegg and then take the bus down to Grindelwald. A longish but relatively easy day.

Another one, is go to Kandersteg (a much nicer and much cheaper place to stay than Grindelwald, IMHO. Right on the rail line and a great base for doing things in either the Vallais or Berner Oberland), take the gondola up Sunnige, hike across the pass, past Schwarenbach to the other side (big broad valley with great views), take the gondola down to Leukerbad and then by bus/train back to around Kandersteg.

The Gasteren Valley out of Kandersteg is for Switzerland fairly remote and very beautiful - another nice day's excursion.

Moni wrote:hike across the pass, past Schwarenbach to the other side

I support that. While in Leukerbad you can enjoy the alpine thermal baths. Skip the gondola and walk the Gemmi pass way which is a challenge for any hiker.

I would suggest staying somewhere in the valley south of Interlaken, I suggest Lauterbrunnen its pretty centrally located, and has everything you need, plus its a good starting point for hikes (and we found a hostel for only 14chf a night).

As for a dayhike I suggest this:

Head from Lauterbrunnen to to Gimmelwald via bus and cable car. From Gimmelwald theres a great long hike that goes to the top of the Schilthorn that should be in great shape during the summer. It also passes through some great little mountain pastures, and further up it gets rough enough to make it interesting (ie sections that have cable to hold on to). Then from the top you can either wimp out and ride the cable car down, or there are many way to hike all the way back down to lauterbrunnen or gimmelwald.

But i definately suggest at least going to the Jungfrau region, either the interlaken side (more touristy) or the Lauterbrunnen side (Less toursity). You could keep yourself entertained for weeks just hiking there.

I found some maps if these help at all, you can get them free anywhere in Switzerland:
http://www.zurich.ibm.com/eurocrypt2004 ... _large.jpg
http://homepage.sunrise.ch/homepage/avo ... te_som.jpg

The <b>Alpi Occitane</b> hosts one of the best trekking-hiking tour of the whole western Alps section : the GTA (Grande Traversata delle Alpi) ... almost 1000km
<a href="http://www.provincia.cuneo.it/montagna/gta/index.jsp">here in Italian language</a>
<a href="http://www.provincia.cuneo.it/montagna/gta/index.jsp?lang=fr">here in French language</a>
<a href="http://www.provincia.cuneo.it/montagna/gta/index.jsp?lang=td">here in German language</a>