Asics Metaspeed Sky Tokyo vs Asics Metaspeed Edge Tokyo:
Which to Choose

On paper these two are almost twins: both score maximally for pace and responsiveness, carry high-but-not-maximal FF Leap cushioning, sit on the same low ~5mm marketed drop, and share a narrow, low-stability neutral platform that feels tippy and out of place at jogging speeds and only comes alive around 3:00–3:15 min/km. The stack heights confirm how close they are — the Sky measures 39mm heel / 33mm forefoot, the Edge 39.5mm heel / 34.5mm forefoot — and both are feathery, with the Sky at 163g and the Edge fractionally lighter at 159g (men's US 9). The meaningful split is mechanical, and it comes down to foam distribution and plate placement. The Sky uses a flatter plate and a more even foam bed to reward runners who lengthen their stride to go faster, giving a firm, springy, distinctly propulsive push that nudges you onto your toes. The Edge pairs a soft, bouncy FF Leap forefoot over a firmer FF Turbo+ heel with a lower, more curved plate, producing a rolling ride with crisper, more grounded transitions that suit runners who instead pick up their cadence — and that firmer heel and slightly deeper forefoot stack make it a touch more forgiving and steady for midfoot-to-heel contact. Use case is the other differentiator: the Sky is a dedicated half-to-marathon weapon that's clearest at full-marathon distance, while the Edge stretches its range down to 5K and 10K, making it the more versatile racer across your season.