Actually the disarm distance is average 26 feet ... if you are ready and the gun is holstered. Gotta be aware of your surroundings at all times
26 feet huh? I'm a middle aged man and you won't make it if I'm that guy. I'm sure you are a super ninja and everything, but you might want to reconsider your abilities before testing them out against real bullets.
If you are an Olympic sprinter out of the blocks, 26 ft is going to take more than a second to cover. A flat footed start would likely take the same Olympian 2 seconds. In the situation I described, facing a ready firearm, that equates to four well aimed shots.