adidas
SauconyWhich should you buy?
Choose the Adizero Boston 13 if you want a hard-wearing, grippy shoe for tempo runs and marathon training, or need a wide fit.
Choose the Endorphin Speed 6 if you want a lighter, springier shoe for workouts and even races.
The Adizero Boston 13 is 24 g heavier than the Endorphin Speed 6. It has 2 mm less foam under the heel. Its drop is 6 mm against 8 mm. It costs £30 less at full price.
Side by side
| Spec | Adizero Boston 13adidas | Endorphin Speed 6Saucony |
|---|---|---|
| Review score | 91/100 (2 reviews) | Not enough reviews yet |
| Type | Super trainer | Super trainer |
| Weight (men's UK 8.5) | 254 g | 230 g |
| Heel stack | 36 mm | 38 mm |
| Drop | 6 mm | 8 mm |
| Cushioning | Balanced | Balanced |
| Bounce | Bouncy | Springy |
| Plate | Carbon plate | Nylon plate |
| Support | Neutral | Neutral |
| Fit | True to size | True to size |
| Widths | standard, wide | standard |
| Waterproof version | No | No |
| UK RRP | £140 | £170 |
Weights are for a men's US 9 / UK 8.5. Prices are UK RRPs; shops often sell for less.
What the critics say
Adizero Boston 13
- Energetic and well suited to tempo sessions
- Grippy, durable outsole
- Improved heel lockdown
- Pointed toe box limits toe splay
- Narrow heel is not very stable
Scores from RunRepeat, Road Trail Run.
Endorphin Speed 6
- Springier PWRRUN PBX foam
- More cushioning but lighter
- Secure heel lock
- Less grounded at easy paces
- Little rubber at the heel
Paraphrased from published reviews.
What's new in each
adidas Adizero Boston 13: More Lightstrike Pro in the forefoot, a stiffer heel counter with thicker padding, a semi-gusseted tongue, a slightly lighter build and a more tapered toe box.
Saucony Endorphin Speed 6: New PWRRUN PBX foam, 2 mm more stack and a redesigned nylon plate, while dropping about 17 g compared with the Endorphin Speed 5.
Prices for the Adizero Boston 13 Prices for the Endorphin Speed 6
More comparisons
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