Track spikes are designed specifically for running on a track, so using them for other kinds of running isn’t recommended. Spikes have less cushioning and a lower drop than regular running shoes. This means there can be more strain on your calves and Achilles if you don’t gradually introduce them into your footwear rotation. You can use cushioned inserts in your track shoes, but this will add to their weight. In general, save your track spikes for races and essential training.