How to get from Bilbao to Lorca?

Hi there, first post here. Thank you in advance for your wisdom. My wife and I are resuming our Camino adventure that we started in 2012. At that time we got as far as Lorca before my wife injured her feet. We will be flying to Bilbao and need to get from there to Lorca to start walking again.

So, any thoughts? is there a bus? a train? we will be spending the night in Bilbao so, the earlier the better.

thanks in advance for your answers

Thank you for this - worked beautifully- we caught a bus from Bilbao to Pamplona and the to Lorca - not expensive and we were walking by 11 am. Buen Camino!