I broke my previous record 3.6 miles I'm now at 3.8 miles over 20,000 feet with the Phantom 2 vision. I'm using a single battery to I almost have it maxed out battery life wise I can't go much further I'm going to try to get 4 Miles but I landed with only 10% battery on the 3.8 mile run so I am cutting close. I have video feed the whole way slight break up on the turn back.