"Running burns a large amount of calories in a short amount of time. According to Prohealth.com's Exercise and Activity Calculator, a 150-lb. person running at 6 mph (10-minute mile) burns approximately 1,022 calories in 90 minutes. Increasing speed burns more calories in a shorter period of time. The same person can burn 1,020 calories in 60 minutes running at 9 mph (6.5-minute mile). Running stairs burns 1,020 calories per hour."
Of course, this will vary from person to person, depending on weight, height, etc.
You're awfully thin for 6' tall....
Take care running stairs. I hurt my knees doing that
I don't really do stairs... that was part of the quote that I copy/pasted and is in quotation marks.