We will take train on a Tuesday AM from Koblenz to Munich, need detailed instructions please. Be specific, we are first time Germany travellers. Is it about 5 hrs?
KOBLENZ? Your other post indicates you're staying in Bacharach. Let's assume you have the idea of cruising from Bacharach to Koblenz and heading directly to Munich thereafter...
Koblenz is a poor choice because 1.) the scenery as you approach Koblenz isn't so great and 2.) the Koblenz KD dock is a LONG trek from the railway station if you're toting luggage; you'll need a bus or a taxi unless you're traveling unusually unencumbered.
Suggest you end the cruise in a smaller town south of Koblenz instead. Boppard is good - and it sends off some fast trains as well as regional and local trains. Boppard is about 1.5 hours cruise time from Bacharach. Or you could get off the boat in Braubach (2 hours from Bacharach) and tour the stunning MARKSBURG CASTLE there (leave luggage with TI office near station before heading up to the castle.)
If you follow this advice, you'll save unnecessary boat time and expense (it's 3 hours just to the Koblenz dock from Bacharach) and find it easier to get to the station.
For a ticket from Boppard, Braubach, or Koblenz, go to the DB itinerary page. Advance-sale tickets go on sale 92 days in advance - it's good to buy them early for the best savings fares, which offer substantial savings.
We are staying in Bacharach for two nights (doing the Bacharach to St Goar river cruise), then we will rail to Koblenz and pick up a car to have for a few days of touring (staying in Beilstein two nights), drop off car in Koblenz and rail to Munich for 5 days.
There is EC train direct to Munich from Koblenz at 9:18 and takes 4 hour 53 minutes.
You really need to learn how to uses this website: www.bahn.com, it will answer most of your questions regarding train times and prices and options.
OK, well skip all that about cruising to Koblenz and focus on the fare/ticket info.
The "Bacharach to St Goar river cruise" is a mere 40 minutes and covers a tiny segment of the scenery. If that seems to short, I suggest you cruise Bingen-St. Goar (about 1.5 hours) for more great scenery or Bingen-Boppard (2.3 hours.)
FYI, in case you're thinking a car rental is the only option: Beilstein has no rail station but lots of folks take a detour there from Cochem (major transport hub) by river boat (1 hour) or bus (20 min., every hour or so.) Cheap daypasses cover area trains and buses (for 2 adults €27/day, Rheinland-Pfalz ticket.)