National and world championships, presented by Alpinestars Australia.
Australian Off-Road Championship
Round: Three/four
Date: 15-6 May
Location: Hedley, Victoria
More information: www.aorc.org.au
AMA Supercross Championship
Round: 17
Date: 5 May
Location: Las Vegas
Australian riders: Chad Reed (450SX), Hayden Mellross (250SX)
More information: www.supercrosslive.com
EnduroGP World Championship
Round: Three
Date: 4-6 May
Location: Castelo Branco, Portugal
Australian riders: Matthew Phillips
More information: www.endurogp.org