I shall be visiting Madrid in mid september and from there I have to visit Santiago De Compostela, Porto, Sevilla, Malaga , Alicante and back to Madrid in the beginning of October for business purpose. Please advice me regarding the most convenient as well as economical travel schedule (by bus or train).

Rarely are the most convenient and the most economical the same. Which is it that you really need? And which options have you looked at so far?

I see that you are new here - - how did I know that? click on your own name (this is one of the numerous useful tips that Fodors fails to tell you when they send you that first e-mail confirming your registration) - - I'll assume that you have also not taken the time to read the "HELP" (little tiny red letters in the upper lefthand corner) - - another oversight that Fodors fails to recommend to you to do.

Anyhow, you owe it to yourself to take a look there: http://www.fodors.com/forums/faqs.cfm - - especially http://www.fodors.com/forums/faqs.cfm#Q6 - - which I have listed below, in excerpt form, for you (my own emphasis added):

=========================

Finally, create a title - make sure it is concise and clearly describes your message (<b>and destination</b>, if applicable) -- and write your message in the space provided

==========================

Thus, when you re-post - - and you really <b>should</b> do that - - be sure and mention <b>Spain</b> in your message header.

Best wishes,

Rex

&lt;&lt;I shall be visiting Madrid in mid september and from there I have to visit Santiago De Compostela, Porto, Sevilla, Malaga , Alicante and back to Madrid in the beginning of October for business purpose. Please advice me regarding the most convenient as well as economical travel schedule (by bus or train).&gt;&gt;

There is very good rail service (RENFE) Madrid-Santiago &amp; vv, Madrid-Alicante &amp; vv, and Madrid-Sevilla &amp; vv. It looks like you may be in the market for a Tarjeta Turistica (SpainPass or IbericPass). Porto is a whole 'nuther story: There's 1-train daily from Vigo to Porto (buy First Class). Porto-Lisbon has the (3-hour) Alfa Pendular and Lisbon-Madrid is the Luisitania Express (overnight).

I've taken the Tren Internacional from Vigo to Porto twice (that's why I say buy First Class). It's like a Regional Rail commuter train and it takes about 4-hours. More info http://www.cp.pt

There are Bus Services along all those routes also. Last year I flew SpanAir &amp; Air Europa to &amp; from Madrid-Santiago de Compostela. I flew into Madrid and went directly to Santiago's Lavacolla airport . It was not expensive.

The trains from Vigo to Porto run twice daily (morning and evening) and take about three hours (it looks like four in the timetable because there's an hour's time difference between Spain and Portugal).