The girls have been hounding me to take them out on some legit singletrack trail for a run for quite some time. They love pounding miles in the Chariot stroller, but today they really wanted to be out in the woods so they could take it all it... so Dad obliged and gave his new idea a whirl. We have a couple of front packs to carry the girls in, and we recently got a backpack carrier. So... one front pack + one back pack + 2 eager babies = successful implementation onto Dad. It was definitely a bit tricky to get us all situated, but the girls had a blast and we did a loop through the woods on the trails in our favorite park. It was more of a fast hike, but the girls just loved it. So did I.