Walks up 4 stairs with support from rail or wall, using one foot for each stair (27 – 28 months)9
Walks up 4 stairs without support, using one foot for each stair (35 – 36 months)9
Walks down 4 stairs without support using one or both feet for each stair9
Walks on tiptoes9, 26
Walks with a heel-to-toe progression, rotating trunk, and reciprocal arm swing41, 48
Turn corners while walking (not sharp corners)48
Runs well without falling48
Walks backwards for 10 feet30
Gallops48
Runs well without falling
Runs well without falling
Runs well, sagittal view
Runs well; heel-toe gait, reciprocal arm swing
Walks up 4 stairs with support of rail, one foot per step