SC Elite 4 vs Alphafly 3

The New Balance SC Elite 4 is a full-fat carbon marathon racer, and it wears that brief proudly. This is a tall, soft, aggressively cushioned racing shoe built to keep your legs alive deep into the back half of a marathon rather than to feel featherlight off the line. At 237g it is on the heavier side for a carbon racing shoe, so it does not have the darty, snappy feel of a lighter racer like the Nike Vaporfly 4. What you get instead is a big, forgiving platform and a rolling, momentum-holding ride once you are up to pace. With a 4mm drop and a full carbon plate it sits firmly in the marathon-and-half super-shoe class. At £280 RRP it is a premium buy, but for a runner who wants cushioning and protection over knife-edge sharpness, it is one of the more comfortable ways to race a long road event.

Most carbon marathon shoes want strong, well-trained legs before they give much back. The Alphafly 3 asks for less than its looks suggest, and that came through in almost every review we read. Nike made the midsole one continuous piece for this version (the Alphafly 2 had a big gap under the midfoot) and took a lot of weight out. Reviewers describe a smoother roll from landing to toe-off, and it no longer feels clumsy on a warm-up jog. Ben Parkes, who has raced marathons in it, reckons it isn't so aggressive that only elites benefit, and thinks plenty of intermediate marathoners will get a lot from it.

It's still a specialist carbon racing shoe, and at £285 RRP it sits near the top of the market. It's also loud on the road, and some feet find it snug. For 5K and 10K races the lighter, snappier Vaporfly 3 makes more sense. For the half and the full marathon, we'd still put the Alphafly 3 near the front of the queue.