Women's Endorphin Speed 6

The Saucony Endorphin Speed 6 is a nylon-plated speed trainer with new PWRRUN PBX foam and 2 mm more cushioning underfoot than the Speed 5. Saucony’s PWRRUN PBX superfoam is new for this generation, and it's the reason the Endorphin Speed 6 sits 2 mm taller underfoot without weighing more. Most shoes that add stack also add grams, and this one adds softness and rebound while staying at 6.9 oz. The result is a supertrainer that makes your tempo session, and the easy day after it, equally as fun.

A redesigned nylon plate runs through the midsole and drives your transitions. The nylon flexes in a way carbon doesn't, so you get snappy propulsion through toe-off without the rigid, all-or-nothing feel of a race shoe — which is what makes the Speed 6 so versatile across a range of paces. The lightweight mesh upper holds your foot in place when you shift gears and keeps you comfortable throughout your run.