I got this naturally while heading towards winning the WRC title and getting to Level 80 even though I was using the short Rally option. You don't need to win every stage either so if one is giving you trouble just take a time loss and move on.
If you are having trouble then it is worth lowering the difficulty to 50% and adding more stages to the events that like. For me it would be the ones with more Asphalt, but it could be different to you.