How Much Walking Should I Do According To My Bmi. 500 brisk steps will burn more calories than 500. A 140 pound (63.5kg) person will burn 1,000 calories in 5 hours walking on level, firm surface at 2.5mph (4kph).
A 200 pound (90.7kg) person will burn 1,000 calories in 3 hours and 30 minutes walking on a level, firm surface at 2.5mph (4kph). A bmi below 18.5 is considered underweight.
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A bmi between 18.5 and 24.9 is considered normal. A bmi between 25 and 29.9 is considered overweight.