Red Bull 400 Harrachov 15.8.2016 · Dan Vojtěch · 0 Comments Running 400m doesn’t sound like much of a challenge, does it? But what if you were to run those 400m at an altitude close to 200m and as a pure uphill sprint? That’s a race guaranteed to put your calves, quads and endurance to the ultimate test. Share this:ShareShare on FacebookClick to share on TwitterClick to share on LinkedIn Leave a Reply Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.