Wheeler Historic Farm is a great park with lots of trails for walking/jogging, as well as animals for the little kids. Best of all, you can get food for the animals at the farm, or bring a loaf of bread with you! It's a great look into the rural life in Salt Lake around the turn of the century, with house tours and wagon rides. It also has milking tours to give city kids a taste of the farm life.
Pros: Peaceful Atmosphere, Free Park, Great Trails