SymbolRatingDescriptionSuitable forFitness Level
grade1Very EasyLikely to be a fire road or wide single track with a gentle gradient, smooth surface free of obstacles.Beginner/novice cyclists with basic bike skills.Most people in good health.
EasyEasyWide trail with gentle gradient and smooth surface. Some obstacles such as roots, logs and rocks. Suitable for beginner mountain bike riders with basic riding skills and off-road bikes.Most people in good health.
grade3IntermediateA trail with moderate gradients, variable surface and obstacles. May include steep and slippery sections. Suitable for skilled mountain bike riders only, with a reasonable level of fitness and basic off-road riding skills.A good standard of health.
grade4Difficult Expect large, dangerous and unavoidable obstacles and features. Challenging and variable trail with long, steep climbs or descents and loose surfaces. Some sections will be easier to walk.Suitable only for experienced mountain bikers use to physically demanding routes. Navigation and personal survival skills are highly desirable.Higher level of fitness.
grade6ExtremeExtremely difficult trails will incorporate very steep gradients, highly variable surfance and unavoidable, severe obstacles.Suitable only for highly experienced mountain bike riders with excellent skills and quality mountain bikes.Higher level of fitness.