adidas Adizero Prime X 2 Strung Reviews

Too heavy for speed work, so only for long or tempo runs; the odd one out in their adidas rotation.

A runner finds the Prime X 2 Strung bottom-heavy and laborious to run in.

100 miles of half marathon training and daily outings. The midsole softens a little with use and the outsole grip and durability are excellent, but the upper bunches over the toe box, puts pressure on the top eyelets and does not lock the foot in. Around an easy 8 min/mile it feels good, while anything faster makes the weight noticeable, and the cutout under the shoe collects mud and grit. They would not recommend it at the price.

About 100 miles, mostly long runs plus some harder efforts. It holds a steady easy or up-tempo pace well with the same bounce from mile to mile, but the weight makes it hard to change pace, so fartlek and interval work struggle. The forefoot is stiff with an aggressive toe spring, the heel slipped until they lace-locked it, and the heel has a pronounced lateral bias. The outsole showed only slight wear after 100 miles.