Downhill and 4X

In many ways Downhill was where Mountain Biking started in Marin County CA with Four Cross following later to draw in the crowds. As the name suggests these are gravity based races with Downhill pitting riders against the clock and the course and Four Cross pitting riders against each other in a knock out competition four riders at a time on a shorter course than the Downhill Courses.

 

Similar to Cross Country there are National and Local race series and some Trail centres offer courses on purpose made tracks to improve ability.

 

http://www.britishcycling.org.uk/mtb/article/mtbst_Get-Into-Downhill-and-4-Cross