@Katiexsharp you've got some great advice from @bryndsharp and @REI-PearlD already. I'll add one additional comment - I really dislike the feel of a trail shoe, with the deeper lugs on the sole, when I'm on a flat surfaces (Iike concrete and a treadmill). I feel more unsteady and less sure-footed because those deeper lugs that you find on trail running shoes really are designed to accommodate uneven surfaces. Plus I notice much faster breakdown of the rubber on a trail shoe when I wear them often on concrete. My recommendation: 2 shoes with very different purposes!