Dylan has started to ask Dave if he can go running with him. Usually Dave meets his running group, so it's out of the question for Dylan to go run with them. However, sometimes Dave just runs from our house. Dylan really wanted to go with him a few weeks ago, so I suggested they run around our neighborhood before Dave went out on his actual run.
Dylan had such a great time. As I am sure you know he is super active and unless he is watching tv he is moving. He did a great job running with Dave and even made it up the steep hills in our neighborhood.