Grading Grading Grade 1 No bushwalking experience required. Flat even surface with no steps or steep sections. Suitable for wheelchair users who have someone to assist them. Walks no greater than 5 km. See all Grade 1 walks Grade 2 No bushwalking experience required. The track is a hardened or compacted surface and may have a gentle hill section or sections and occasional steps. Walks no greater than 10 km. See all Grade 2 walks Grade 3 Suitable for most ages and fitness levels. Tracks may have short steep hill sections, a rough surface and many steps. Walks up to 20 km. See all Grade 3 walks Grade 4 Bushwalking experience recommended. Tracks may be long, rough and very steep. Directional signage may be limited. See all Grade 4 walks Grade 5 Recommended for very experienced bushwalkers with specialised skills, including navigation and emergency first aid. Tracks are likely to be very rough, very steep and unmarked. Walks may be more than 20 km. See all Grade 5 walks