With the 5700kv motor I'm guessing not very long... 2200mah and 20C is only 44 amps of discharge rating. Suspect a 5700kv in a 1/10 scale vehicle is going to puff that battery up fairly quickly.

With a 27T motor perhaps 8-10 minutes?

Either way, keep in mind that you shouldn't run a lipo all the way down, hope you have a low voltage cutoff if you are going for maximum run time.