RunningAHEAD - Topic: Distance Mismatch with MapMyRun

RunZRun

running yogi

posted: 8/31/2009 at 1:12 AM

When I map the same run RA gives me 6.01 miles, where as mapmyrun shows 7.8 miles. Who is right ?

This is a difference of almost 2 miles !

Mandy Simpson

posted: 8/31/2009 at 3:07 AM

Quote from RunZRun on 8/31/2009 at 1:12 AM:

When I map the same run RA gives me 6.01 miles, where as mapmyrun shows 7.8 miles. Who is right ?

This is a difference of almost 2 miles !

Not a lot of info to go on there? Can you show us the two courses mapped out?

Trent

Good Bad & The Monkey

posted: 8/31/2009 at 8:15 AM

When you say "RA", do you mean a map you made on RA or a route you uploaded to RA from your GPS?

I'm running somewhere tomorrow. It's going to be beautiful. I can't wait.

Poor baby

mikeymike

posted: 8/31/2009 at 8:50 AM

I suspect user error.

Runners run

ymmv

posted: 8/31/2009 at 9:03 AM

Maybe you only get accurate distances on MapMyRun when you "UPGRADE to their freakin PREMIUM SERVICE!"

I will never know....

mgerwn

Hold the Mayo

posted: 8/31/2009 at 11:54 AM

If you're tallking about a course you mapped out manually (mouse-ually?), I would redraw the mapmyrun course (since it's longer). It's very easy to accidentally double back and cover a course twice, and if there are any loops in the course you may have mapped them more times than you intended to. If it's a course you're uploading from your Garmin or other GPS, well, I got nuthin'.

Keep an eye on over/underpasses on your route, as well - sometimes I'll click on an overpass when I want the road under it, and the map software will take me up and down the on and off ramps and cloverleafs to get to the other side. It's easy to spot in closeup, but on a long route (and zoomed out) you may miss it.

"You're Not Winning"

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RunZRun

running yogi

posted: 8/31/2009 at 1:10 PM

I used the RA mapping tool to measure the distance I ran. I don't own a GPS :-( maybe I shud

Let me try to upload the two maps to show you guys...

RunZRun

running yogi

posted: 8/31/2009 at 1:18 PM
modified: 8/31/2009 at 1:19 PM

Quote from ymmv on 8/31/2009 at 9:03 AM:

Maybe you only get accurate distances on MapMyRun when you "UPGRADE to their freakin PREMIUM SERVICE!"

I will never know....

I think you maybe right. I mapped the distance 3 times on mapmyrun and got 3 very different results ranging between 6 and 8 miles.

With the RA mapping tool however, my results were consistent and well within the 'mouse-al' errors.

I think it's time to get me a GPS for Christmas...

eric :)

posted: 8/31/2009 at 3:22 PM

As far as I know, RA is working correctly. I can create maps of known routes to within +/- 0.02 miles. I can't vouch the same for another site although the geeky side of me want to know the cause of the discrepancy so if you can provide a link to an MMR map with inconsistent distance, I would be happy to investigate further.

Distance Mismatch with MapMyRun (Read 746 times)