Fitness
Moderators: melkor


Just wondering if anyone has had experience with this site.  I mapped my runs and what I thought was 2 miles by my estimate was 3 miles when I mapped it.  The problem is that my husband thinks the run is around 2 miles also and I don't want to be wrong.  A one mile difference is huge in terms of calories burned and daily total. 
10 Replies (last)
I use the sister site mapmyride.com which also uses google maps.  I aslo have an odometer on my bike.  I have found the site to be accurate within a few tenths of a mile over distances up to 100 miles. I would trust mapmyrun.
It can be inaccurate if you don't zoom in close enough while mapping, and map, for example, in the middle of the road, instead of on the side where you actually ran. Because a run down the middle of the road will be shorter than the side of the road. This effect wouldn't explain one whole mile of a 3 mile run though - I have seen more of a 1/10 or 2/10th of a mile difference, however.

I have my nike+ ipod properly calibrated and it lines up fairly closely to what mapmyrun gives me. So close, in fact, that recently I ran a 5K and my ipod said it was only 3 miles, not 3.1 miles. I went home and mapped it using mapmyrun, and it agreed the course was short. Then I talked to a bunch of people who've run the same 5k in years past, and all agreed that the course was short this year... turns out they ended it at a different place than they normally do!

You could always get in your car and mileage it out... but that's not always accurate either. I've heard that many car speedometers are improperly calibrated.

Otherwise, I don't know what to tell you... I would trust mapmyrun, but then again, you never know. How about you try running on a track so you can measure out a true 2-3 miles, see what your time is, then extrapolate from there? It's not perfect, but it should be able to help you figure out whether 2 miles is more likely vs 3 miles... because that is a BIG difference.  
Thanks, I'll try the other site just to compare.  I did zoom in pretty close when I mapped it.  I would try the track idea if the closest one wasn't an hour into town...  :o    Thanks again! 
I tried Map My Run also and got nearly identical mileage.  Then I went from Street map to satellite (google) and got the same answer.  So , I guess I will happily log my 3 miles!  Time to add another one and make if four.  YAY!   I was just worried if the info.  was accurate since Hawaii  isn't known for their accuracy in anything! (Just try following the street signs over here...oh, wait, what street signs!)  LOL!  PS... Jenmcc: how do you calibrate your ipod????  I'm kind of new to this running stuff.  I love biking but have started running with my puppy.  Then at the end of my run sometimes I get on my bike and make him chase me some more, I can't wear that dog out!  
I mapped my walk using it and it showed up as 2.9 miles.  Taking my car over the same route produced 3 miles.  I guess the best thing to do would be to measure it out any way you can.  If it follows a road or is on a road a car would do the trick. 
Calibrating the nike+ipod is pretty simple, but you need a track or other measured distance that you are sure about. Then you just select "settings" and "calibrate," enter in the distance, and walk or run that distance.

I also use mapmyrun.com.  I have used the site and my car as well as my boyfriend's car.  All three came out nearly identical (.1 higher in the car, which makes sense by what jenmcc said, we're driving the middle of the road, running on the side).  I personally like that site and have spent hours mapping out different runs. 

:) 

The distances on the maps are accurate. As long as you zoom in close enough that your track is following the curves of the road and not cutting corners, you're going to get an accurate distance measurement from it. I use mapmywalk.com myself (I'm not a runner) but it's great to find out exactly how far my walks are... the only thing 'off' about it is that the calorie counts it gives me are much lower than the ones I get from CC.com... so I'm going to assume that it's not really set up for high bodyweights.
Original Post by kajikit:

The distances on the maps are accurate. As long as you zoom in close enough that your track is following the curves of the road and not cutting corners, you're going to get an accurate distance measurement from it. I use mapmywalk.com myself (I'm not a runner) but it's great to find out exactly how far my walks are... the only thing 'off' about it is that the calorie counts it gives me are much lower than the ones I get from CC.com... so I'm going to assume that it's not really set up for high bodyweights.

I know what you mean about the body weight factor.  When I input my miles on the Runners World website it gives me a lower number.  It only asks for weight and miles ran.  I know for a fact being 5'3 & 170 running 3 miles would burn more than someone 6'1 and 170.  I just use it for guideline and then check it against CC. 

I wondered about this too. I tend to run a pretty solid 6 mph (and 7 mph on a treadmill), so I expected my run to be about 6 miles since it takes an hour, but when I mapped it out on map my run, it said it was only a little over 5 miles. Disappointing if it's true!
10 Replies
Recent Blog Post
In Texas, chili is a spicy stew of meat. Beans are what northerners add to ruin the dish. This northerner living in Texas took that as a challenge and created a chili recipe that is far from traditional...  

Continue reading...