Adidas Adizero Boston 12

With the Adidas Adizero Boston 12, the German brand reinvents its lightweight trainer for neutral runners looking for versatility between daily training and faster paces. Despite the weight gain over previous versions (267 g in a US 9), the carbon fibre EnergyRods and the new Lightstrike Pro foam make an interesting combination: protection without giving up energy return. It is an approach that brings it closer to rivals such as the Endorphin Speed 3, but with a more versatile character. Compared with other lightweight trainers on the market, its price makes it a competitive option in the mid to high segment. Worth noting: it is no cheap deal, but if you find it discounted, it can be a real bargain for runners looking for one shoe to do everything.

For fans of the Boston line, the changes from its predecessor, the Adizero Boston 11, are significant. The double-layer PrimeGreen upper uses recycled materials (up to 50%) with a modern, breathable design. The reinforced side straps at the front provide stability, although some runners may notice a certain restriction of the foot's natural flex. The thin tongue with padding at the top and the traditional laces keep a secure fit without annoying pressure points.

The midsole of the Adizero Boston 12 stands out for its combination of Lightstrike Pro on top and Lightstrike EVA underneath, offering cushioning on a par with the best lightweight trainers in its category. The carbon fibre EnergyRods add noticeable propulsion without feeling aggressive for amateur runners. The Continental outsole ensures exceptional grip in the dry and wet, with above-average durability. Ideal for varied training, moderate to fast paces and neutral runners looking for a versatile shoe. One plain truth: no carbon rod will improve your anaerobic threshold, you build that yourself kilometre by kilometre.