Nike’s Air Zoom Pegasus has just got a speed upgrade via a new model, the Nike Zoom Pegasus Turbo. The Turbo was inspired by these dominant marathon shoes, employing the same highly responsive ZoomX foam in the midsole and taking on the same aerodynamic shape of the heel. The new running shoe delivers 85 percent energy return, which is the greatest of any Nike foam. It’s also Nike’s lightest foam, it is currently used in three silhouettes – the aforementioned Zoom Vaporfly Elite (which was worn by Breaking2 athletes) and Zoom Vaporfly 4% and now the Zoom Pegasus Turbo.
What foam can do is help to reduce the amount of energy being lost by your shoe every time you compress it by applying force to it (with running this is typically a combination of your stride, pace, and weight). It does this by springing back toward its original shape every time your foot leaves the ground. The closer it can get to its original shape, the more energy transfers back into the foam. The carbon-fiber plate increases stiffness to provide a propulsion sensation, allowing runners to quickly “pop off” the road. It feels fast and a little firm. Feedback from elite runners who’ve run major marathons in these shoes, including Eliud Kipchoge and Galen Rupp, indicated that’s what makes the shoe ideal for race day but it’s also what makes them a little too much for everyday use. Since ZoomX foam delivers the greatest energy return of any Nike foam, it has the power to provide more comfortable kick runners crave during daily training runs. The 10 -mm offset and 12-mm forefoot stack height are designed to help runners store more energy, which can provide greater energy return, while the heel collar is engineered to curve away from the Achilles tendon to avoid rubbing or irritating the sensitive spot.