Can I travel by Train from Interlaken Switzerland to Paris France?

If so does anybody have an Idea how long the journey would be?

http://www.sbb.ch/en/index.htm

enter the departure stop and destination, then hit "search connections".

Travel time is approx 6 hours and you need to change at least once.

That is right - SBB is the swiss train company, and you can find connections to other european countries on their homepage. Train journey from Switzerland to Paris is very comfortable and takes only a few hours.

There is a TGV (fast train of the French Railroads) from Berne to Paris. This journey takes around 4 1/2 hours.

You'll have to take a train from Interlaken (which is a town in the canton of Berne) to Berne. And after that you can take the TGV. The travel from Interlaken to Berne takes around 50 minutes.

Check out the exact timetable here:

http://www.sbb.ch/en/index.htm

To travel via Bern would not make sense since you would not have direct connections.
The most effective connections by train take 5 hours and 28 minutes and are as follows:

depart Interlaken West 09:06 or 13:06
arrive at Basel SBB — 10:55 or 14:55
depart from Basel SBB 11:02 or 15:02
arrive at Paris Est —— 14:34 or 18:34


Source(s):
http://reiseauskunft.bahn.de/bin/query.exe/en