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Compared from 40 real runner reviews

adidas Terrex Speed Ultra vs Brooks Caldera 7 vs Brooks Caldera 8

Side by side from 40 real reviews. Every count is the same as on each shoe’s page.

How the signal works
The signal score

A score out of 100 for how well reviewed a product is next to others of its kind. It rises with positive reviews and with how many there are; negative and mixed reviews take points off. The best in each category scores in the 90s.

So a handful of glowing reviews can’t beat a product lots of people like. No sponsored placements.

76 signal

16 reviews

71 signal

13 reviews

67 signal

11 reviews

In short

Runners praise it as a light, grippy, minimally cushioned trail shoe, but durability is split: several had outsoles crack or fail early while others got long wear.

Runners mostly use it for ultras and long trail days with good results, but some find it narrow or short.

Runners like it as a stable, comfortable trail shoe that does well on descents, but fit is a recurring problem, with some finding it too narrow or tight.

Liked mostreviews mentioning it

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Specs

Weight
255 g (9 oz), men's
Stack height
26 mm heel / 18 mm forefoot
Drop
8 mm
Weight
300 g (10.6 oz), men's
Stack height
39 mm heel / 33 mm forefoot
Drop
6 mm
Weight
309 g (10.9 oz), men's
Stack height
39 mm heel / 33 mm forefoot
Drop
6 mm

More comparisons

Shares count reviews with a clear verdict from the recent window, like each shoe’s page. Tags are counted over the same reviews. All shoes