I am VERY active and walk everyday in addition to bike rides. I was given a bike trailer/stroller combo for Christmas, and have already gotten a separate double jogging stroller since then. If you are going to use them often, I do NOT recommend getting the combo. It's not hard to switch them, but it is not a quick switch. I also struggled, because since it was a gift, I did not do the research, and I am not crazy about the bike trailer. It will work well as a trailer, but I don't like it as a stroller. If you are going to switch occasionally, a combo will be fine, but you are going to have to pay a lot more for a decent brand, so you may be better off getting a less expensive trailer and a separate stroller, like we did. (I ended up getting the BOB SUS stroller and I LOVE it! As for the trailer, I like the Burley, but haven't tried it. I don't like mine, it is a no name brand.))