It took me 41 minutes. I decided to do the math, 28 bottles at 20 ounces each is 35 pounds, so that plus whatever the ruck weighed to slow me down, plus another two bottles for actual drinking. Did it in uniform with steel toe combat boots, so I ended up with some blisters (gross). Someone took pictures while I was charging up the hill to the finish line, can't wait to see them. I was breathing heavy like a madman at that point like I was about to die.
Honestly, it was more like interval training with weight than a run. I kept alternating between a brisk jog to a brisk walk, constantly drinking water during the walking portions because it was hot as hell.