Benzema nets brace in comfortable Real Madrid victory
Even with several players missing - not least Cristiano Ronaldo - Madrid had far too much for their hosts.
Emmanuel Adebayor scored the simplest of openers in the 23rd minute before Benzema added a second moments later.
Pablo Pinillos' awful penalty wasted a chance for Racing to get back into the game, and although they briefly threatened after Kennedy Bakircioglu did get a goal, Benzema quickly ended the threat with his second.
Adebayor missed a late penalty, but Madrid had already done enough to move back seven points behind leaders Barcelona.