adidas Adizero Prime X 2 Strung Reviews

'Almost unmissable' for long-distance runners who like to push limits. The new tongue reduces chafing and the extra foam helps you go further. Not race-legal, so hard to recommend to everyone. Long-term durability is untested.

Exceptional cushioning and stability for long runs and marathon-pace efforts, with an effective rocker, and durable so far. Its increased weight is a drawback, and wet grip was worse than expected.

Seven to eight months of use, starting with easy runs of three to five miles and including a 10-mile outing. The ride is bouncy, squishy and comfortable, and they call it great for long runs and tired legs. The upper is fixed rather than adjustable, but it locks the foot in and the heel feels like it might slip yet does not. The one gripe is that the deep soft foam made their toes dig in and caused blisters on long runs; the high price is a barrier.

Enjoying the Prime X 2 Strung for long runs on uneven open roads during marathon base building, and finds it better there than the first version.

After three pairs at about 200 km each, the Prime X 2 Strung is their 2023 marathon-training winner: the more stable iteration they hoped for after the PXS1, and worth the money.

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.