The Adizero Boston 6 replaces the Boston 5, both of which employ Adidas’ Boost midsole material. The Boston 6 is Adidas’ third lightest shoe after the Takumi-Sen and Adios Boost, both of which are true racing flats.
The feel of the Boston 6 is very similar however, and I would recommend this as an uptempo or racing shoe which can easily handle the marathon distance.
In the market it is my opinion that the Boston 6 competes against other uptempo shoes such as the Nike LunarTempo, the New Balance Zante v2, and the HOKA One One Clayton, all of which are neutral shoes designed for faster paced running and weigh less than 9 ounces.
The Boston 6 definitely has the firmest feel of the bunch, especially in the forefoot. While many runners prefer this semi-firm feel, this looking for a softer forefoot feel should look elsewhere.
In fact it is hard to believe that the Boston 6 weighs in at 8.8 ounces as the feel of the shoe is much lighter. I was immediately impressed with the top notch materials Adidas has used in this model to increase durability and ride.
Most notably, Adidas makes a significant upgrade to the mesh around the toe box using knitted CoolEver mesh which was pliable and accommodating rather than the somewhat brittle, thinner mesh they’ve used in the past.