The IFMAR World Championship for 1:10th Electric Off-Road Cars (officially "IFMAR 1:10 Electric Off-Road World Championship"), is a world championship radio controlled car race sanctioned by the International Federation of Model Auto Racing (IFMAR). It takes place biennially on odd years since 1987 in its current format but inaugurated in 1985 as a championship for Stock (stock handout motor) and Modified class (modified motors and seven cells) It is considered by the radio-controlled modelling industry to be the most prestigious event in the calendar that a number of mainstream hobby and toy brands have fielded factory entries.