Whoever said weightlifting isn't good for cardio can ride it. Did the Chief the other day with a group of fairly athletic people. I was the biggest and heaviest guy there + I had a backpack with all my camera gear + 6 bottles of water, and I had no problems at all while people literally half my size were dying.
Day after, no leg soreness, nothing. Time to hit up some squats
EDIT:
Found this sick video, hope its not a repost: