If you're considering a dog for a workout partner, I guarantee that they will be a buddy that never begs off that 5 mile run in favor of sleeping in. (centralparkpaws.net)
Two different times this week I have done eight mile runs on the treadmill at our gym. (pinkandnavystripes.com)
Once you're doing 20 + mile runs with some marathon pace running, it's more important to optimize your pacing than your fat burning. (runyourbq.com)