If quick kms are your jam--tempo runs, intervals, repeats, strides, race-pace mileage, or even races themselves-- Saucony's now-legendary Endorphin Speed line of "super-trainers" could just be the shoe for you. The Endorphin Speed 5s exist at the sweet spot between a lightweight daily trainer and full on race-day shoe.
Visit https://foveo.run/blogs/footwear/saucony-speed-5