How many calories does running burn?

okay i run cross country... but it is mainly to stay in shape...the problem is... i have a short attention span and i get bored on the 7 mile runs...and just want to start walking after about 4. sometimes i'm not tired, but my legs are sore from shin...

Hi, how many calories would I burn running one mile? I'm a 16 year old male, I weigh 130-140 pounds, and I usually run at about an 8 minute mile pace (9 minute for really long ...show more

I have 12 stairs and I'm about 5'4 and a half or 5'5. I weigh about 125 :( Would I burn fat or gain muscle? I want to burn fat first, then gain muscle. I plan to do it for 7 or 10 minutes for starters and then go up as I burn fat.

I have fifteen stairs and i ran up them 30 times and down them 30 more times so basically 60 times. how many calories did i burn?? i am 5 foot 2 and weigh in around 109 pounds

Also, how many calories does jogging for 30 minutes burn?

I am 5 foot 10 and a half inches and weigh 162.3 pounds. If it changes anything I was also dribbling a soccer ball while running these laps, and I kind of alternated between jogging, running, and sprinting. I know it will be hard to tell with my description...