3 weeks Europe trip in 5-6 countries

I'm going to suggest that you start with the website Rome2Rio. It will give you an idea of travel times between the places you want to visit based on mode of travel. You can also start piecing together a logical itinerary.
Based on the places you have named I would fly into Rome and out of London, or the other way around.
Italy, Switzerland, Germany, France, Belgium, UK would be the logical order.
That said, I think you have listed too many places for your planned 21 days. Your Switzerland activities alone are at least 6-7 days worth of travel. You'll probably need to cut down on the list of places you want to visit.

Get a map, plot out the cities you plan to visit, check the Rome2Rio.com site for travel times/options, and then start eliminating some places from your list.

As your list goes now, starting in UK, then Brugge, Paris, Germany, Switzerland, Venice, Rome, you seem to have about 15 places named for 19-20 nights of travel.

Your first and last days in Europe will essentially be wasted days. Every time you move from city to city will be wasted days.
It's best if you fly open jaw--into once city and out of another.
Efficient travel is going in a straight line to cities that compliment each other. Western Europe is much larger than it looks on a map.
You could travel from London to Paris in under 3 hours on the Eurostar fast train. Both cities need 4 nights minimum.
Then you could go by train up to Brussels/Bruge and over to Amsterdam. They're worthy of 3 and 4 nights respectively to see properly.
You could spend the balance of your time taking a train south through Germany's Rhine RIver valley--ending in Munich.
Unfortunately you won't have time for Switzerland or Italy. They're a completely 3 week tour to themselves.

Thanks guys for ur help really appreciate tht.
Yes you r right, I think we need to cut down few places and this is where we really wana go and need ur suggestions what is the best way to travel and save time n money.
Flying in to London for 3 nights
Fly into Rome for 1 night
Thn train Venice for 2 nights
Thn train to Lugano for 1 night
Thn train to st Moritz for 1 night
Thn glacier train to Zermatt 1 night
Thn train to Bern for 1 night
Thn to Zurich for 1 night
Thn to Paris for 2 nights
Thn to munich for rest of the trip and we'll fly back home from munich.
Flying frm London to Rome is pretty cheap.
Is there anything else we need to change or is still to much. Please advice us which is must to see or which we can take out of the trip. In Rome n Paris we just want to see land marks like Eiffel tower n all Thts all. Thts y dnt wana spend much time in those cities.
Regards
Harinder.

This is better but you still don't have my stamp of approval...not that you need it but... :)
Anyway, never, ever spend just one night anywhere! Think about it...you travel to Rome (for example) arrive from London by air. You spend AT LEAST an hour disembarking, getting through customs, etc. Then you have to get to your hotel - at least 45 minutes. Check in and settle in - another 45 minutes. Ah...you're ready to see Rome! By then it's 1PM (at best). You thought ahead and got tickets for the Vatican Museum. You arrive there at 1:30 and tour it. 3 hours later you emerge and go to the Forum and then to the Coliseum, which is now closed. You go get some dinner and go to Piazza Navona to eat and enjoy the beautiful fountains. Later you walk around then it's time for bed. Next morning you get up, pack your things and head to the train station to go to your next destination. Was that really worth a flight from London?
My point is that one night anywhere really gives you no time to see much of anything at all. My description above is VERY optimistic providing all goes well.
For a three week trip you need to boil it down to, at most, 5 locations IMHO.

Some small towns can be enjoyed with just a one-night stay, especially if you can arrive early in the day. Rome does not fit that description (too big) and Zermatt also probably does not (since Glacier Express arrives at 5 p.m. or later). I would delete Bern and Zurich.

Just trying to make sure you understand: in Europe, a one night stay somewhere means you only have a ridiculously small amount of time to see anything in the destination you're paying to go to so you can see and do things.
2 nights in a place gives you one full day.

Thts true guys, I think I need to re-plan it again. But m not sure about the timminigs for all the trains, I tried few sites but all of them r saying no routes available. Could you plz suggest from where j can Chk all the times for trains and in English as well Plz. This way it ll help me to plan and book hotels in advance to save done money.
And m not sure if Bern n Zurich is a nice place to see BCz I heard a little abt about them Thts all. And we want to see natural beauty like mountains n views rather Thn meuseums n art sort of stuf...
Thnank you...

Go to the website Rome2Rio.com. Type in your starting point and ending point and it will give you all of the possible ways of getting there including travel time. For example you want to go from St. Moritz to Zermatt. Here are all of the possibilities (click here). This is a FULL day of travel.
Once you get to Zermatt you need to hope that you have good weather - after all, in Zermatt it's all about the views so you don't want to get there, have bad weather, pay the exhorbitant costs for food and lodging in this very expensive town, and have to then leave the next day never having seen the Matterhorn or enjoyed the views from the top of Glacier Paradise. October is shoulder season so the crowds should be thin but the weather could be quite dicey.

Hi,

Your first day in London is not a wasted day if you arrive in the morning. I've arrived there twice in the morning, you can still get things done or see a museum.

Do you know what you want to do in these cities/countries? The list/itenerary that you posted has a lot of places, but not much time in any one of them. While it is completely acceptable to shove as much as possible into your vacation and try to hit as many countries as possible, it's not the best plan for lifelong memories, or getting home still talking to your travel mates. I would get some guidebooks from the library (or the internet, but even as a milenial I have trouble sorting through the junk on the internet) and figure out what everyone absolutely must see, would like to see, and would like to do. Figure out how much time these activities will take, then try to cobble together some sort of route. Rick Steve's Europe through the back door has some 'preplanned' routes if you need some guidance as well as some great general advice (my tiny library has a copy so most should have one). Assume a new city will take at least a few hours to find the hotel, get checked in, and get to/from your hotel. I used to travel the cram method, but had trouble remembering what I saw. A lot of my treasured memories are spontaneous accidents, not seeing David or Mona Lisa. Don't forget to schedule an off afternoon or day for lazing at a cafe/sitting in a park/doing laundry/napping. You did not mention how big your group is, but it is ok to split up for a few hours if there are different interests.
Good luck

Hello johny2627. Did you or your travelling companion go to Europe before ? In the trip to Europe that you are planning, what is the total number of days that you will be away from your home ? Your home is in what country ? If it is the United States of America, are you a resident in a state other than Hawaii or Alaska ?
You said you will go to the main cities. And you said you want to see natural beauty like mountains, rather than museums and art sort of stuff. If you will travel to several countries in Europe, I suggest that you plan to go to either a big city in each country, or a place for seeing natural beauty (such as mountains, ...) in each country. If you decide to see a variety in each country, I suggest : travel to a maximum of four (4) countries.

My husband and I did a crazy whirlwind 22 night trip in 2010 that included one night stays in Strasbourg, Augsburg, Munich, Spiez, Bern and Zurich with some two and three night stays sprinkled in in Paris, Salzburg, Venice, Milan, London (and one overnight train ride). When going back over our pictures, my husband could not even recall being in Munich - he totally forgot and I had to remind him! By the time we got to Munich from Augsburg (we had an awesome couchsurfing host and ended up staying much later in the day in Augsburg) it was evening, we saw nothing that night, and had til about 4pm the next day til we had to get to Salzburg.

When people say you lose a half day travelling from place to place, they aren't kidding - just checking out, getting to the train station, changing cites, finding your room, settling... Not to mention going broke paying for trains. You really should do yourself a favour and slow the trip down. Even our trip in 2012 was a little rushed, but I am now learning the joys of slowing down, spending 2 nights in smaller towns, 3 nights in larger towns, and 4-5 nights in major cities.

Appreciate ur replys guys and thnx for the help...
Yea guys U r all right and now I think it's but too much in tht period of time and we really need to cut few more places. We really dnt wana miss London, Paris, Venice and glacier train in Swiss and few days Germany. So have to plan a itenarary again or if u guys can help me out Plz where and for how many days shd we stay in each place.
We want to spend 3 nights in London and 3 nights in Munich. Rest I dnt know how to plan and what option will be the best including travelling from one place to another... According to ur experience we shd stay atleast 2 nights at one place which is true. After London andjnich we have two weeks left (around 10 nights).
We ll reach in London on 2 oct and flying back home from Munich on 23 oct.
Plz help me out from where shd I start my trip from and which way. We want to start either from London or from Munich.
Thanks

Hi,

You can cut down on the loss of time, such as settle the bill the night before check out day. Most people don't do that, or pay any time between the time you check in or between. The 2 star hotel I stay at in Paris prefers that I pay up for the 3-5 day stay, whatever the length, at check in. That settles that. Stay near the train station so that you walk 2-4 mins to and from station to hotel. It's a waste of time standing in line to check out, esp if any party ahead of you starts bickering/contesting the bill

On departure day you don't need to rely on wheels to get you to the station, esp if you have to take an early train, ie at 0700....just walk. The arrival day is not all shot if you arrive prior to noon, max at 1300.

Thnx Fred Thts a Gud advice. I will note this down.Appreciate tht

Hi guys, we tried to change our plans and Plz give us advice oN this Plz...
We will arrive in London for 3 nights
Thn to Paris for 2 nights
Thn to geneva(Swiss) 2 nights
Thn to Lucerne 2 nights
Thn to Zermatt 1 night to catch glacier train to st Moritz
St Moritz 2 nights
Thn to Venice 2 nights
And Thn to Munich for the rest and fly back home from Munich.
Plz advice is if this is alrite or do we need to make another few changes... We have about 18-20 nights in Europe.
Thts how we figured out and wud like to know ur opinions Plz
Thank you.

Here's my take on some parts of your itinerary:

We will arrive in London for 3 nights - fine for a first taste. Just remember that jet lag hits everyone differently, so your first day may be a haze. You should figure out NOW what you want to see.

Thn to Paris for 2 nights - Similar to London, that's short but doable, if you can pare down your list of things to see.

Thn to geneva(Swiss) 2 nights - why Geneva? It has some fans, but most feel that it's not a highlight of Switzerland. Other towns along the lake, like Lausanne or Montreux, get better reviews (I never saw Geneva, but I did enjoy Montreux and Lausanne).

Thn to Lucerne 2 nights - fine, as it's not a large place.

Thn to Zermatt 1 night to catch glacier train to st Moritz - bad idea. If the weather is bad on your 1 night in Zermatt, you've gone a long way for nothing. Spend a few nights there, or skip it and spend them somewhere else.

It's your trip, so do what you want. For me, this is still too much moving around. You're "seeing" a lot, but getting to "experience" less than if you stayed in fewer places that were closer together.

"Thn to Zermatt 1 night to catch glacier train to st Moritz - bad idea. If the weather is bad on your 1 night in Zermatt, you've gone a long way for nothing. Spend a few nights there, or skip it and spend them somewhere else."

If they're going to Zermatt so they can take the Glacier Express to St Moritz then they're not going there for nothing, and maybe they'll luck out and the weather will be nice.