i am new in this game and i got some gems so i used them on the heroic event i got the the last of lap 3 and stop useing them cuz no one was neer me and now it saying that i need to do AL LIST 4 laps to get the prize i mean WTH it didnt say that any where! if it would i could use more gems and get to lap 4! now i used most of my gems and didnt got anything cuz the game lied to me! plz help

Sorry it was clearly labeled that you had to qualify by reaching lap 5, so yes you get nothing but the early rewards for laps 2 through 4. BTW all race discussions are being held in the race topic, closing this.

EDIT:

Not counting the tutorial that stated you needed to qualify to reach the rewards, it was marked in three different locations that you needed to qualify. Here is a pic of them to help you in future races. The arrows point out the key information.