Most trains stations are "downtown", airports are not. The travel to/from airport, the check in "x" hrs ahead of scheduled flight, delays etc add up. I suspect the time savings you expect from flying may not actually exist.
Take trains at night, and sleep. No need for hotels bills in some cases.
Watch the train schedule, one that has a gazzlion stops obviously takes a lot longer than a dirct train.
Whether train or plane, try to check ahead and make sure you're not travling during some Euro holiday (unlnown to us). It'll make booking either a real pain.
Originally posted by: feralkid
"hit as many cities as I can in 10 days"
That's the problem, not train vs plane.
Pick a couple cities, spend a little time to actually see them.
Enjoy!
Quality over quantity is my method. Unless you just want bragging rights about what cities/towns you've been "in" - slow down and absorb the character and charm of the place.
But try to be effient about your travel plans (train/plane schedule) so you don't waste time stitting around some terminal, or taking a train etc that stops every 20 minutes instead of a direct one.
You can also tire yourself out if you rush too much. That will diminish the enjoyment. See, you'll likely find that you'll be walking quite a bit, or doing a lot standing like in museums etc.
Try to have some idea of what you want to see in the places you choose so you don't dither about that. Get maps in advance also. Train schedules and such can usually be found on the internet, you needn't wait until you get there.
Fern