How can I get from Sevilla to Madrid on the train?

[AngelRenderos]

Hi everyone. I´m currently studying abroad in Sevilla, Spain and my family is visiting me and we´re meeting up in Madrid. I´m not sure how to get there, but I guess the easiest way is by train, since a plane would take to long to board, fly there, etc. Does anyone know what line or anything that I would need to take? The lines are so hard here in Spain.

Any other advice? Thanks so much!