The Adistar is the shoe adidas builds for mileage rather than for pace. REPETITOR foam is dense and slow to break down, and the 40 mm heel means there is a lot of it between you and the road.
It suits high-volume weeks, runners who land heavily, and anyone who would rather buy one durable pair than replace a soft one twice a year. Easy days and long runs are where it earns its place.
It is not quick and it does not pretend to be. There is no plate, the foam gives very little back, and at around 266 g on a tall platform it feels deliberate rather than lively. Race in something else and let this one absorb the weeks in between.