Adidas Adizero Boston 13 vs Hoka Mach X 2:
Which to Choose

On paper these shoes are near twins: both carry a high-cushion, high-responsiveness, neutral build, both pair a PEBA top layer with a firmer carrier foam, and both weigh essentially the same — roughly 255g for the Boston and 252g for the Mach X 2 in a men's 9, a difference you won't feel. The drops are also close, 6mm on the Boston and 5mm on the Mach X 2, so neither forces a meaningfully different footstrike. The real divergence is underfoot geometry and how each shoe generates its propulsion. The Mach X 2 rides on a much taller platform — around 46mm at the heel — so it feels more cushioned and relies on a long, smooth rocker to roll you forward, with a single winged Pebax plate giving a seamless, forgiving push. The Boston 13 sits far lower, roughly 37mm at the heel, which makes it feel more connected to the ground and more agile; instead of a full plate it uses glass-fiber EnergyRods threaded through the midsole, giving a snappier, more segmented toe-off and a firmer, more planted roll. That geometry also shows up in stability: the Boston's lower stack, wider firm base, and rods make it the steadier of the two (rated 4/6 vs. the Mach X 2's 3/6), while the Mach X 2's taller stack trades a little of that settled feel for extra cushioning. Both come alive with pace and feel a touch stiff and busy at true easy-jog effort. Where they tip apart in use: the Boston's firmer, lower ride and Continental rubber outsole lean slightly more race-ready and durable and reward a quick cadence, with its sweet spot stretching into half-to-marathon efforts, while the Mach X 2's taller, bouncier stack is the more cushioned cruiser for uptempo long runs, happiest from 10K through the half but with enough foam to carry a marathon.