This is my first time purchasing the endorphin speed. Typically run at least 50mi a week, and have been a huge fan of endorphin pro 2 ,3, 4. However, I rarely get more than 350miles out of each endorphin pro before the midsole of the shoe separates from the upper knit at the arch. While I don't feel as much pop from the speed, I can instantly tell the upper of the shoe is not going to have this problem as it is substantially more durable than the pro. The feel of speed is a little bit slower but I think it will hold up well as a trainer that takes on the bulk of my mileage so that I can save the pros for tempo runs and races
Read More