Men's Alphafly 4

Nike's legendary marathon racer is back and lighter than ever. The Alphafly 4 gets the first-ever update to its Air Zoom unit, so it feels softer and quieter underfoot while giving back more energy with every stride. A layer of featherweight ZoomX LT foam sits over bouncy ZoomX, with extra cushioning under the curved forefoot, and a wide carbon fiber Flyplate adds a propulsive push while keeping you stable all the way to 26.2. The updated Atomknit upper has open-hole mesh zones to keep you cool and midfoot cables to lock you in. Nike lists it at about 6.6 oz (Men's 8.5 / Women's 10) with an 8 mm drop, so it's built for race day, from your next 5K to your big marathon PR.