Is the Great Manchester Run really 10km?

1 to 20 of 29 messages
27/05/2013 at 18:20

My Garmin seems to measure this run as 6.3 (last year) or 6'34 (this year) or more miles.  Not much of a difference, i know, but it does affect your personal time significantly.  Wasn't aware of weaving much and Great North Run was accurate  distance on my Garmin. 


Any thoughts anyone?!



27/05/2013 at 18:26

In the grand scene of things it matters not a bit 

27/05/2013 at 18:29

you'd be surprised how hard it is to race the optimal racing line in these mass events.

10.18km for me at the Bupa London 10k today.

It happens and it's the way it is!

27/05/2013 at 20:37

I am glad somebody else has spotted this my "map my runn app"measured it as 6.4miles which is more than 10k. Every bit further affects your time if your aiming to break a pb.

27/05/2013 at 20:43

Ah, but how do you know the next 10 k you run is exactly accurate ? 

So in the grand scheme of things ....

27/05/2013 at 20:45

come on, we all know it works like this

hit a pb, don't even dare question the distance or even look at it

don't hit a pb, use any little excuse you can find, often claiming running over distance.

Today i'm claiming the heat, twisty course, and the above over distance.

Edited: 27/05/2013 at 20:46
27/05/2013 at 21:32

Considering how easy it is to measure distances accurately, I can see no reason to over measure courses 'just in case'. 

'Just in case of what'? How much corner cutting is possible? I'd rather run 10k as 10k plus a couple of metres. Sticking the best part of 200m on the distance is just going over the top.

27/05/2013 at 21:53
I doubt the organisers measure it with Map my run or a Garmin.
Are garmins 100% accurate? I don't think so.
27/05/2013 at 22:18

There's a runner on this forum who wants to complete a 10k in under 60mins. On his 4th attempt at 10k he did 1hr 24 seconds and gutted. If the distance is not accurately measured the time could well of been under the hour and this makes 6 months of training all the better. 

I am quite sure the organisers Did measure it accurately, but it would be interesting to see how many others measured the distance over 10k 

Edited: 27/05/2013 at 22:22
27/05/2013 at 22:21

If it has been measured by UKA and has certificate as such then it is accurate ... And it's not measured using a piece of electronics The UKA measure using a wheel 

27/05/2013 at 22:24

If your so bothered about a pb and your so trusting of your garmin why not just stop when your garmin tells you it's 10k and note down your time. Step off the course happy that you have shaved a couple of seconds off your pb and then rush home to tell everyone how fast you are.

as far as I'm concerned a pb can only really be for a certain course anyway otherwise why not go to the top of Snowden and run downhill for 10k and claim a world record! 


27/05/2013 at 22:27

Dave, I am sure you are right. But , you quoted earlier that in the grand scheme of things it doesn't matter. Unfortunately I beg to differ. It does matter ........

27/05/2013 at 22:29

I am right.... The UKA measure using a wheel and certify that a course is accurately measured...

but in the grand scheme of things it doesn't matter a damn 

27/05/2013 at 22:29
Barry, if that person had run the exact line they had used when measuring the course then he would have run exactly 10k. If he veered off at any point then he has to accept that he will be running further than 10k.
The best way to pace it is with a normal stopwatch and use the KM markers. Hit every km marker at 6 min intervals and there you go!
27/05/2013 at 22:32

Thanks for the motivational speech Chris. I am inspired now to push myself on.


27/05/2013 at 22:46

Just saying it seems a bit petty to me, I'll give up the dream of becoming a motivational speaker due to an obvious lack of ability. Guess I'm just a different sort of runner, no garmin, no heart rate monitor, no gadgets at all, just a few pairs of trainers and a basic love of running.


28/05/2013 at 08:55

I ran the London 10k yesterday.

I enjoyed the sunshine, the event, running with my son...

I take no watches, monitors, etc, I just run and enjoy it.  When we got home, we checked our results on the website and were pleased that we ran the secdond half slightly quicker.  That does it for me

28/05/2013 at 09:01

It's the blind acceptance that your garmin is spot on, and that you ran the shortest possible route...

Didn't  go between any high buildings or under trees ?

Not for one moment of your run did your garmin drop from tracking 7 satellites to only 3 ?

we live in a small village, using a digitised OS map I have a distance of 1.98 miles for a lap of the village from our front door, In the 2 years I have had my gps unit I can count on the fingers of one hand the number of times it has clocked 1.98 miles for a lap of the village, yesterday the traffic was heavy, so instead of crossing the road by the shops I ran up to the pub, But that took me round the outside of the big bend in the village... Friday I called at the post box, which meant crossing the road twice.

See how easy it is to stick to the exactly measured route ?

If the race is claiming a UKA measurement then it is accurate, your garmin isn't


Edited: 28/05/2013 at 09:11
28/05/2013 at 10:31

Thanks you , everyone -: a very interesting and helpful discussion with lots of food for thought!  It was posted in the spirit of trying to understand these things, as I was a little confused.  On reflection, I think maybe the width of a course needed for.. these events encourages distance-adding zig-zags (altho still puzzled why I haven't had inaccurate measurements at other similar events).

A few other observations to answer the less important points:

I did get a PB anyway. This was still a modest time as I am a relatively new runner but what is most important to me is not the time itself, but whether it is showing an improvement in my fitness.

I did relax and enjoy the sun and simply running!

I was in the right wave for me and so only had to slow pace once due to congestion - if anything, my speed was improved by those around me.

And finally - yes, Dave - you are right.  I won't be worrying about it on my deathbed!!  But in the meantime, it's good fun to have these little personal targets!


Thanks for your contributions everyone.



28/05/2013 at 14:47
Courses are mearured on bicycle with a little gadget called a jones counter, which trips every time the wheel does a full turn. If it is a closed road race the measurer will take the shortest route possible. If it is an open road then he will go to the white line on bends with lines or to the bends without lines he will cut the corner to get the shortest route.
With a race like manchester you will find that only the first 500 runners will be able to take advantage of the shortest route because of mass and you cant all run the measured line.
If a run has a run britain permit it will be measured correctly and garmins should only be used for training runs as a guide and or a time piece on race day.
The best races to do are club runs that keep clubs going and dont put millions into Mr fosters back pocket under the great run banner.
Dont forget the accurately measured Lea Town 10k with run britain permit 12th October 2013 all welcome and within half a mile you will all be able to run the race line.
1 to 20 of 29 messages
Previously bookmarked threads are now visible in "Followed Threads". You can also manage notifications on these threads from the "Forum Settings" section of your profile settings page to prevent being sent an email when a reply is made.
Forum Jump  

RW competitions

RW Forums