

| Spec | Adizero EVO SL 1 | Endorphin Speed 5 |
|---|---|---|
| Best price now | £77.08 | £90.00 |
| 90-day low | £77.01 | £79.20 |
| 30-day average | £120.87 | £133.96 |
| RRP | £150.00 | £155.00 |
| Category | Tempo | Tempo |
| Surface | Road | Road |
| Weight | 224g | 241g |
| Drop | 6mm | 8mm |
| Heel stack | 39mm | 36mm |
| Forefoot stack | 33mm | 28mm |
| Carbon plated | No | No |
| Stability | No | No |
| Review rating | 5.0 (1) | - |
Few running shoes of the last couple of years got talked about as much as the EVO SL, and the reason is simple. adidas took the Lightstrike Pro foam from its race shoes, left out the carbon rods, and sold it at a daily-trainer price. At 224g with a 39mm heel, it's a light, bouncy tempo shoe that reviewers keep calling a bargain.
It shines when you pick up the pace. Tempo runs, intervals and goal-pace work are its home, and plenty of runners race half marathons in it. It's less happy at a slow shuffle, and it isn't a stable shoe, so it won't suit everyone as a do-everything trainer.
If you want a plate for race day, the Adios Pro 5 is the step up. As an unplated speed trainer, though, this is the one others in the category get measured against, and the few flaws people mention (laces, tongue, some early outsole wear) are small ones.
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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