I've been working up to doing all six miles of Jessica Smith's 6 Mile Mix in one fell swoop, and I finally did it today (woot!) without dying or feeling too exhausted. In fact, I feel great! Now, while my time doesn't always permit me to do a workout this long, I'd love to have more options for six or more miles without having to string things together (e.g. doing two three-mile Leslies or a five-mile and a one mile, etc.). I'm open to all instructors, but I have found that walking videos are among the best for me for cardio, as they have zero dread factor and it's easy to dial up or down the intensity on my own with weights, jogging intervals, etc. Any recommendations?