Alphafly 3 vs Fast-R Nitro Elite 3

The Nike Alphafly 3 is the brand's maximalist marathon racer, the carbon racing shoe built to carry you to a road PB and not much else. It pairs a full-length carbon plate with twin forefoot Air pods and a tall slab of ZoomX foam, so you get a ride that is bouncy, propulsive and unapologetically built for going long and fast. At 218g it is not the lightest super shoe on the shelf, but the energy return more than earns the few extra grams once you settle into marathon or half pace. This is a specialist. It rewards a committed forefoot or midfoot strike and a pace you can actually hold, and it feels flat and over-built if you jog it easy. If you want a slightly lighter, more nimble option for shorter races, the Nike Vaporfly 4 is the natural stablemate. For the marathon, though, the Alphafly is the one we reach for.

The Fast-R Nitro Elite 3 is PUMA at its most single-minded: a carbon marathon racer built to hold hard pace and give a lot back when you push. At a claimed 170g it is genuinely light for a full-stack road racing shoe, and the split-forefoot geometry that defines the Fast-R line is back, so the ride feels aggressive and unashamedly race-only. This is a running shoe with one job, and it does it well. It sits at the sharp end of the super-shoe market on price at £260, right alongside the Nike Alphafly 3 and the adidas Adizero Adios Pro 4. If you want a carbon racing shoe purely for marathons, halves and fast tempo work, and you run best off a snappy propulsive platform rather than a soft rocker, it earns its place in the rotation. Just know what you are buying: this is a race-day tool, not a do-everything trainer.