If you like the GT 2000, but you really want a neutral shoe that’s better suited for uptempo running, and with the features needed by triathletes—actually, the Noosa FF 2 is quite a bit different from the GT 2000, but it’s one of the best Asics for running triathlons. Asics has redesigned the sole of its Noosa Tri line around its new FlyteFoam (hence the “FF”), a midsole material that’s light in weight while providing sufficient bounce and cushioning for athletes on the go. The new approach seems to be working, as the Noosa FF 2 is tied for the lightest shoe on this list at just 7.1 ounces in a women’s size 8.