4.5 mph is not walking, it's running for a petite female.

aHAHAHHAHAHH Exactly what I was thinking today while I was RUNNING not walking as MFP claims lol
I'm 5'1, so.....I am def running with my short legs

Right there with ya. 5'4.5" and to me

2.5 mph is a normal walk
3 mph is a fast walk
3.5 mph is a very fast walk
4 mph is a jog
4.5 mph is running

Hell, I'm 5'10" and that is my fast pace for out on the trails. Granted on the track I can do 5.5 to 6 MPH, but most of my running is in the hills on rocky terrain. I find it demoralizing when I see these threads and the ensuing post that anything under a 12 minute mile isn't running/jogging. Running is a gait, not a speed, and I may be slow, but I'm working my *kitten* off!

Speak for yourself! I'm only 5'2" and anything less than 5mph is walking for me. I run at 10mph.

Hey, maybe you are right! I hadn't really thought about it.

But, a person can also speed walk as fast as some people run. It's just a different way of moving. A little less impact and you get to look really silly, wiggling your hips back and forth, super fast, in a graceful figure eight motion, with your arms moving, all done with determination.

On the bright side, when my husband and I go for a hike, I get more of a workout keeping up.

I know what you mean but I just decided to make my own entry for running. I am slower than a lot of runners I know, but I am definitely running.

There are some short, fast runners, though, too.

4.5 mph is still 4.5 mph whether you walk or run it you will be burning the same amount of calories.

Create your own exercise that says 4 mph RUNNING!

Yup I'm with you!!

4.5 mph is still 4.5 mph whether you walk or run it you will be burning the same amount of calories.

Yep. I rather jog at 5 mph than "walk" at 5 mph and look ridiculous doing so. Yes, Speed walkers looks funny to me. I mean, real speed walkers. You know who im talking about. lol

Right there with ya. 5'4.5" and to me

2.5 mph is a normal walk
3 mph is a fast walk
3.5 mph is a very fast walk
4 mph is a jog
4.5 mph is running

I'm similar! 5'3 and to me

3 is normal walk
3.5 is moderate walk
3.8 is fast walk
4 is a jog
4.2 is running
4.5 is slightly faster running
4.8 is as fast as I can go and I can probably take it for 30 seconds

That last one sounded pretty dirty.

4.5 mph is still 4.5 mph whether you walk or run it you will be burning the same amount of calories.

Yep. I rather jog at 5 mph than "walk" at 5 mph and look ridiculous doing so. Yes, Speed walkers looks funny to me. I mean, real speed walkers. You know who im talking about. lol

What you talking about me for? lol j/k but I know I look funny when I speed walk lmao eventually I will get to running

It may be walking for a over 6 foot male but for a petite woman it is light running. I am 5'5 and take more steps than a taller person to keep up so wouldn't that mean I could run at a slower MPH than a man?
It makes no sense to me that I have to run at 4.5 MPH but MFP claims I am walking. It's unfair really. I feel i am running and according to my heart rate I am. MFP really needs to take height and length t of legs and torso into consideration. Also list more exercises. speed intervals on a treadmill is not even listed neigher is planking. They list cleaning house as exercise but not being in a mosh pit which is much more moving than cleaning.

Use this, jogging down to whatever speed.

For logging and eating back calories using MFP, use the NET function. Gross would be what the MFP database reports, or a HRM, if you really want to compare.

Create your own exercise if desired in MFP, but then again, use whatever you want, change the minutes, and then change the calories.

http://www.exrx.net/Calculators/WalkRunMETs.html

I'm 5'4, and 4.5 is a fairly fast walk for me. 5.5 is a light jog, 6 mph is a good jog that I can keep up for a few miles, definitely not a "run" though. Maybe try to elongate your stride? As far as calories burned walking vs running, you would need a heart rate monitor to be sure. Just because it "feels" harder, doesn't mean it is actually burning more calories. It also depends on the length of the exercise, it's usually easier to walk a mile than to run it, even though walking it takes longer.

ETA: MPH or miles per hour, is just how many miles you can run in x amount of minutes. So 4.5 mph is a 13 minute mile. Some people would consider that a jogging pace, some would consider it a walking pace. Kind of on the border.

4.5 mph is still 4.5 mph whether you walk or run it you will be burning the same amount of calories.

Pushing your weight free of gravity into the air, compared to just propelling forward.

No, there is a decent difference, especially as weight increases or time/distance done.

http://www.exrx.net/Aerobic/WalkCalExp.html

84 vs 65 cal / mile / 100 lbs.

According to this article once you hit 12:30 minutes per mile (4.8 MPH) walking hits the point where it burns the same amount of calories as running. Faster than that you will burn more calories than running at a 10 minute mile.

http://m.runnersworld.com/weight-loss/running-v-walking-how-many-calories-will-you-burn

It also notes that almost no one other than competitive speed walkers go 12:30 m/m walking.

Im 5'1" and I walk on the treadmill at 7km ( 4.5mile)
Just saying ;-)