

| Spec | Deviate Nitro 4 | Endorphin Speed 5 |
|---|---|---|
| Best price now | £80.42 | £90.00 |
| 90-day low | £79.05 | £79.20 |
| 30-day average | £110.90 | £133.96 |
| RRP | £150.00 | £155.00 |
| Category | Tempo | Tempo |
| Surface | Road | Road |
| Weight | 245g | 241g |
| Drop | 7mm | 8mm |
| Heel stack | 33.6mm | 36mm |
| Forefoot stack | 26.6mm | 28mm |
| Carbon plated | Yes | No |
| Stability | No | No |
| Review rating | - | - |
Puma cut the Deviate Nitro 4's RRP to £150, £10 under version 3, and made it a friendlier shoe while it was at it. Reviewers agree it's the best-fitting Deviate so far: the upper has more give, and the midsole feels softer on easy runs yet still picks up when you push. Think of it as a carbon-plated daily training shoe and tempo shoe rather than a marathon racer. It sits lower than most super trainers, and on paper its 7mm drop is lower than the old model's too. What it lacks is a bit of excitement. One UK review panel liked it but felt rivals such as the Adizero EVO SL are springier, and lab testing found the heel much less lively than the forefoot. We rate it a very good all-rounder, a step behind the best in its class.
The Endorphin Speed 5 is Saucony's do-it-all tempo trainer, and in our view it is one of the most useful running shoes you can own. It sits below the carbon race shoes and above the plush daily trainers: a springy, nylon-plated shoe built for the fast half of your week. At 155 pounds it costs less than a carbon racer, and the nylon plate means it flexes rather than dictating your stride, so it stays friendly across a range of paces. Push into a tempo and the PWRRUN PB foam gives you real bounce and rebound. Slow it down for a steady long run and it still feels smooth and protective. Plenty of runners will race a half or even a marathon in it. If you want one lightweight shoe to cover workouts, tempo days, progression runs and the odd race, this is the running shoe we would point you to first. The nearest rival is the adidas Adizero Boston 13.
A side-by-side comparison makes the trade-offs between two running shoes easy to see, but the right pick still depends on how you run. Weight and stack height shape the feel underfoot: a lighter shoe with a lower stack feels nimble and fast, while a heavier, taller stack gives a softer, more protective ride for long miles. Heel-to-toe drop changes where you feel the load, with lower drops asking more of the calves and Achilles.
The price figures update from the UK retailers we track daily. The best price now is the cheapest tracked price we can currently link to, the 90-day low shows how cheap the shoe has been recently, and the 30-day average tells you whether a price is a genuine drop or just the going rate. Coverage is partial rather than complete, so always confirm the final price and your size on the retailer site, and set a price alert on the model you want so we can email you the moment it drops.
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