Streakfly 2 vs Deviate Nitro Elite 4

The Streakfly 2 is Nike's short-distance specialist: a featherweight carbon racing shoe built to fly over 5K and 10K, not to baby your legs through a marathon. At 165g it is one of the lightest plated road racers you can buy, and that shows the moment you lift the pace. This is the rare super-shoe that stays nimble and low to the ground, so it turns and accelerates like a racing flat while still giving you the carbon snap you expect from a modern running shoe. Compared with the Vaporfly 4, which is built for the full and half, the Streakfly trades stack and long-haul cushioning for speed, agility and a more connected feel for the road. We rate it highly for parkrun PBs, track 5Ks and sharp interval sessions. At 170 pounds RRP it is a focused tool, and we would buy it knowing exactly what it is for.

At 170g, the Deviate Nitro Elite 4 now weighs the same as Puma's more aggressive Fast-R Nitro Elite 3, and that shifts who it's for. It keeps the steadier, heel-strike-friendly shape the Elite line has always had, but most reviewers found the midsole livelier than the Elite 3's and the outsole better too. One long-term tester said it was the first Deviate Elite they'd enjoyed since the original, and Believe in the Run went further, calling it Puma's best race shoe so far. We see it as a carbon racing shoe for 10K and half marathon, and a marathon shoe for runners who find the Fast-R too twitchy. The catches are a narrow midfoot, thin forefoot rubber and early wear reports from a couple of testers. At £215 RRP it's priced alongside the big names, so check the price table before paying full whack.