There is a timetable on the RENFE web site here

Thanks for your response got an idea of the length of journey and time to get there.Doesn't seem to be times for return journey,do you know if the price quoted is for single or return journeys.Or should I phone the number(my Spanish is very,very rusty and don;t know if it's up to asking those type of questions over the phone)thanks again

It tells you on the web address I gave you the departure and arrival times are given in columns 3 & 4. If you go to the RENFE web site home page you can type in your journey and get the details from there.

Sorry, I did not drop down the renfe page far enough,just having another all too frequent senior moment,thanks again