Here you enter the area known as Spanish Lapland, firstly for its similar population density as Lapland in Scandinavia, but also for its temperature extremes. It can get down to -20°c in the winter and up as high as +40°c in the summer.
Teruel is the only city in this area and it's an out-and-back journey to get there, but if you need supplies and want to spend sometime around there then it's where you can start the Montanas Vacias (Empty Mountains, montanasvacias.com) bikepacking route.
This area is also home to the two highest points on the route both at around 2,000 metres (6,562 ft), so if you're here at the beginning or end of the season then they could well be below freezing point and/or covered in snow.