Making an Emperor Penguin walk a bit on a treadmill is nothing.  The emperor penguins travel 60-100 miles inland to their designated  breeding sites.  As if any fatty could cover those kinds of distances in Antarctica (or anywhere). Penguins are also excellent swimmers so really they're bi-athletes.     Most penguins swim underwater at around four to seven miles per hour (mph), but the fastest penguin—the gentoo (Pygoscelis papua)—can reach top speeds of 22 mph! - The Smithsonian  I don't think they'll be able to compete in cycling with those little legs though.