Running training blocs work best when they are varied. In summer and winter, they can take place on the road, off-road or even on the track. Ambitious triathletes will find a wide range of race day shoes in this category, as well as comfortably cushioned shoes for long-distance use, minimalist running shoes for short, high tempo units or forefoot technicians and pure trail running shoes for more variety off the beaten track. You can never have enough running shoes – feet that train a lot, love variety.