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1 He/she will likely be using a step-to pattern in which he/she places both feet on each step. 2  18-20 months-By the time your child is this age, he/she should be able to walk down the stairs as well, placing both feet on each step and using a railing for support.
Quick Answer. Just over 52 flights of stairs is equal to the distance of one mile. However, climbing stairs is twice as much exercise as walking on a flat surface. Within the same amount of time, slowly climbing stairs burns two to three times as many calories as walking quickly on a flat surface. Continue Reading.