

| Spec | Adizero EVO SL 1 | Endorphin Speed 5 |
|---|---|---|
| Best price now | £91.00 | £106.00 |
| 90-day low | £74.54 | £75.00 |
| 30-day average | £132.89 | £137.41 |
| 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) | — |
The Adizero EVO SL is adidas taking its marathon race foam, stripping out the plate, and giving you a lightweight speed trainer you can actually run every day. At 224g it feels closer to a racer than a daily shoe, and that is the whole point. This is a running shoe for the runner who wants one pair for tempo sessions, strides, parkrun and the odd long run, without the rigid, all-or-nothing feel of a carbon racing shoe. You get lively, propulsive cushioning and a low 6mm drop that keeps you up on your forefoot. At an RRP of £150 it undercuts most super-trainers and plated tempo shoes, which is a big part of why it has been so popular. In our view it is one of the most versatile shoes adidas has made in years. If you want the plated race-day version, the Adizero Adios Pro 4 is the sibling to look at.
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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