OP – If you do go to the Sierra Espuna NP (I think it’s more than an hour away to be honest), check the ‘La Perdiz’ restaurant in the forest (not far from the visitors centre)…I went there for three days in a row once I’d found it. A proper Spanish hunting kind of place, all the meat they serve once roamed in your surroundings. Giant venison and wild boar kebabs, served with fried potatos, bread and a glass of red for about 7 euros! 😀
As mentioned above, Wikiloc is your friend. I would have been lost without it as I was downloading routes onto my phone and luckily the memory card fitted my GPS. If you haven’t a GPS, buy one over a bike bag as the best trails aren’t waymarked.