Adidas Adizero Boston 13 vs Adidas Adizero Evo SL:
Which to Choose

Underfoot, these shoes share a lot — both run on a PEBA-class Lightstrike Pro top layer, both sit at a 6mm drop, both come alive once you pick up the pace and feel a little busy or unsettled at a slow jog, and both are tuned for roughly the same 3:45–4:30 min/km training-and-racing zone. The differences start in the midsole construction. The Boston 13 layers soft Lightstrike Pro over a firmer Lightstrike 2.0 carrier and threads glass-fiber composite EnergyRods through it, which gives it a more planted, propulsive, roll-forward transition and a firmer, more guided feel; its above-average stability (4/6) and wider, firmer base make it the steadier platform. The Evo SL skips the rods entirely and runs full-length Lightstrike Pro, so its rebound comes purely from the foam — it's softer, bouncier, and a touch more playful, but also less stable (3/6) on that tall, soft stack. On the numbers, the Evo SL is both lighter and taller: it comes in around 224g with a 39mm/33mm stack, while the Boston 13 is around 260g on a 37mm/30mm stack — so the Evo SL feels nimbler and more cushioned at the same time, while the Boston feels more substantial and connected to the ground. That structure also shapes their range: the Boston 13 genuinely stretches from 10K through the half to the full marathon, with the half-to-marathon as its sweet spot, whereas the Evo SL is happiest from 5K to the half with the 10K as its home base. Durability leans to the Boston too — its firmer Lightstrike 2.0 base and Continental outsole give it more structure for high-mileage training, while the Evo SL carries the typical lifespan limits of an all-soft-foam speed shoe.