Running 400 meters doesn't sound like much of a challenge, does it? But what if you were to run those 400 meters at a height gain close to 140m and as a pure uphill sprint? That's a race guaranteed to put your calves, quads and endurance to the ultimate test.

After numerous editions over the past eight years, Red Bull 400 is set to conquer 19 ski jumps across Asia, Europe and North America, putting racers from every continent under the most grueling physical pressure they'll ever face.

Back in 2011 the idea of a reverse usage of a ski jump facility for was born in Austria with just a bunch of mountain and staircase runners. Today ambitious athletes from all over the world come to join Red Bull 400, an unbelievably intense race, and can participate in two main categories: full-distance solo for men and women and a co-ed relay (4x100 for men and mixed gender).

In Finland, this epic relay race will take place in Lahti, at ski jump Suurmäki, on 7th of September.