Adidas Adizero Adios Pro 4 vs Asics Metaspeed Sky Paris:
Which to Choose

On paper these two are remarkably close. Both sit on a roughly 39.5mm heel stack, both are rated high (not maximal) on cushioning, both are maxed-out on responsiveness, and both are deliberately low on stability — tippy at a jog, planted only once you're truly racing. The first concrete split is the propulsion system. The Adios Pro 4 pairs dual-layer Lightstrike Pro PEBA with carbon-infused EnergyRods rather than a solid plate, which produces a soft-then-snappy, pronounced rocker that tips you forward aggressively. The Metaspeed Sky Paris uses FF Turbo Plus PEBA over a true full-length carbon plate, giving a firmer, more continuous roll-forward drive. The second split is weight: the Sky Paris is the lighter shoe, coming in around 180g versus roughly 198g for the Adios Pro 4 — a real, feel-it-at-speed gap of close to 20g. Drop also differs slightly — the Adios Pro 4 runs about 6.5mm versus 5mm for the Sky Paris — so the Adidas keeps marginally more heel under you while the Asics sits a touch flatter and more forefoot-biased. The most useful distinction, though, is stride type: the Sky Paris is the "Sky" model built specifically for runners who race by lengthening their stride rather than lifting cadence, and its geometry rewards a committed forefoot-to-midfoot landing. The Adios Pro 4's rocker is more all-purpose fast — it insists on turnover and comes alive best at sustained sub-3:20 efforts. Durability is a wash: both expose foam and run thin, lightweight uppers and race outsoles, so both are key-session-and-race-day shoes, not high-mileage trainers.