Adizero Adios Pro 4 vs Cielo X1 3

Reviewers mostly liked how the Adios Pro 4 runs, and their complaints were about their toes. On speed they're close to unanimous: softer and bouncier than the Pro 3, a lot lighter, and properly quick once you're at 10k to marathon effort. The Run Testers found it lighter and cheaper than the Alphafly 3, if a little less springy. On fit, the toe box tapers, it runs a little short, and several testers had sore toes by the end of a marathon. So this is a carbon racing shoe for neutral runners with normal to narrow feet who race with some intent, from 5k up to the full distance. It's less happy at jogging pace or under a heavy heel strike. The newer Adios Pro 5 has a lower RRP and more padding at the heel, so check the price table before paying full whack for the older shoe.

The Hoka Cielo X1 3 is a max-stack carbon racing shoe built for runners who want a big, protective ride without giving up pop at pace. It sits right at the top of the stack rules with a 44mm heel, a carbon plate and a PEBA-based super foam, so it is squarely a marathon and half-marathon shoe rather than a short, snappy 5k racer. The story of this third version is refinement. Earlier Cielo X1 models were brilliant fun but heavy and a handful at slow speeds. This one is billed as the lightest and most stable yet, and that matters because it makes the big platform far easier to actually race in. If you have looked at the Nike Alphafly 3 and wanted something with a broader, more planted feel underfoot, this is the Hoka answer. It is premium at 250 pounds, but for long-distance race day it delivers a genuinely propulsive, cushioned ride.