Red Bull 400

Slovenia • Date: TBC (usually held in September) • Entry cost: £20 • redbull.com

Running 400m flat-out is tough. But racing it on your hands and knees while gaining over half that distance in height at the same time is simply brutal. The Red Bull 400 fires you the wrong way up the world’s largest ski-jump slopes, climbing from top to bottom for the equivalent of 60 stories. With an average slope angle of more than 45%, the Slovenian race is the toughest of the Red Bull 400 International Series, and definitely not recommend for anyone with vertigo. Sign up if a full blood transfusion with lactic acid is your idea of fun. RACE STATS Distance: 0.24mi Elevation: 662ft Course record: Luka Kovacic, 4 mins 5 secs

The venue, known as ‘The Flying Hill of Gorišek brothers’ is home to 28 world records, including Ryoyu Kobayashi’s 827ft ski jump in 2019.