![Hill sprints help build power, speed and endurance, and are a good complement to aerobic training. Photo: Chad Riley](http://cdn.triathlete-europe.competitor.com/files/2014/04/Hill-Repeats-280x421-199x300.jpg)
Hill sprints help build power, speed and endurance, and are a good complement to aerobic training. Photo: Chad Riley
Aerobic development is the primary avenue to long-term success in distance running. This reality has been proven through research and
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