My Strava Eddington Number

Bug fix alert! Do you have any multi-day activities? If so, I've been under-calculating your Eddington number and need your elapsed time for each of those activities. Please get a list together of each strava activity id and its elapsed time (in seconds), and email the list to webmaster@swinny.net. Alternatively, you can refresh the score from scratch by re-importing all activities; see the Help Guide for the link. Thanks!

To get started:

The Eddington Number is the greatest number of days that you've ridden that distance. So, if you've managed 30 or more 30-mile days, then your number is 30. If you've only managed 20 or more 20-mile days, then your score is 20. It's an interesting self-improvement statistic, but is quite difficult to calculate - so here is a Strava-based tool that does it for you!
Need more background information? Read more about the Eddington Number, plus some all-athlete charts.

You can now see a breakdown of your Eddington number within each year, seeing how it increases month by month!


70 Comments

by Jane on 22 April 2023
Hi I’m rides from 2021 and 2022 aren’t showing anymore, I’ve tried disconnecting Strava and reconnecting again a few times but it doesn’t work. Is there anything else I can try?
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by John Swindells on 22 April 2023
Hi Jane, something's not working right. I've just emptied your activities manually, so next time you view this page you should get a fresh list!
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by Steve O on 04 April 2023
My Eddington number page shows my total number of activities - over 5000.

The Going the Distance chart, though, only shows 3000+

Wondering why the discrepancy?

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by John Swindells on 04 April 2023
Hi Steve - this will be because you've sometimes recorded multiple activities on the same day. The Eddington number, visualised on your "Going the Distance" chart, is all about the distance gone in a day.
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by KevinTrew on 20 February 2023
Hi

It appears that the count down in rides to achieve your next number is missing? E.G. You have 2 more rides of 84miles to achieve Eddy no. Of 84

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by John Swindells on 21 February 2023
Hello Kevin, I don't show a target if there's no data for that distance, so in your case you might not have any 83-mile days.
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by Michael Fitzsimmons on 18 February 2023
The app appears to be pulling data for only one of 3 bikes- The newest of the bikes.
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by John Swindells on 19 February 2023
I'm not aware of any gear-specific privacy settings. You haven't retired the other two bikes have you? All that should matter to the import is that the activities are publicly accessible.
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by Osman on 06 November 2022
Great tool! What do the numbers in the "Count" and "Day Count" columns mean?
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by John Swindells on 07 November 2022
Thanks Osman. "Count" is the number of activities. "Day count" is the number of days with activities.
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by Guido on 04 November 2022
Hi John, nice little tool. Thnks for it. Before I go much to deep into the calculation/ investigation. 74,99 km/mi or whatever the dimension is, its used as 74, not as 75? Think you can answer this quite quick!
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by John Swindells on 04 November 2022
I always round down, Guido, no matter how close it is to the higher number. So 74.99 will be rounded to 74.
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by Matt on 03 October 2022
Hi John - this is a very interesting. My imperial E number is 62 but the metric number is 88. Is there a calculation error here?

thanks for the tool.

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by John Swindells on 03 October 2022
Hi Matt, there probably isn't an error as each Eddington number depends on the distance AND count. This means that the metric E-no will not just be 1.609x the imperial one. Hope that makes sense!
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by Chris D on 15 August 2022
This tool and VeloViewer disagree slightly on E-number. I think it's because VV totals rides from the same day. I often have a road and MTB ride in one day (coaching HS MTB team) so I prefer VV's more generous algorithm. What do you think?

Thanks for this fantastic tool! I've been using it for years, and it's fun motivation to add an extra few miles to a long ride!

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by John Swindells on 16 August 2022
Hi Chris, glad you like the tool! Bit odd that the number comes out different to VV, as I also base it on miles ridden in a day. There could be differences with how multi-day rides are chopped up (I use a fairly approximate method).

Just go with whichever number is higher ;)

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by Ausied on 10 August 2022
Hi John , at what point do do you get to the top 1% , friend of mine just cracked E100 and they are in top 2 %
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by John Swindells on 12 August 2022
Hi Ausied, you can see the frequency plot of all Eddington Numbers here: Calculate your Eddington Number. The scale along the bottom is a bit messed up, but if you hover over the blue bars you can see that the top 1% currently starts at E-103. So, not far to got for your friend - as long as they didn't just do century rides of course!
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by shane on 22 April 2022
Hi, is there a way to make it count activities which were manually added to Strava
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by John Swindells on 22 April 2022
Hi Shane, manually added activities should be imported here automatically - as long as they're public of course. If this is the case and they still aren't appearing, start from scratch using the link in the Help Guide at the top left of this page.
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by Jan Hrivnak on 25 January 2022
Is it possible to join all "Ride" and "Virtual ride" to one number? I ride outdoor but in winter only indoor Zwift. Thanks!
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by John Swindells on 19 February 2022
Hi again Jan. I've just added an "All" activity type that combines all of your activities.
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by Jon B on 16 November 2021
For me the Strava connection is broken. Worked 2 weeks ago. I have disconnected and reconnected to Strava and no data shows up.
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by John Swindells on 17 November 2021
A software upgrade stopped sessions working properly, so we were losing your connection info. It should be fixed now though!
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by Riccardo on 07 August 2021
Nice tool, but the metric preference does not work consistently. For example clicking on a specific year still shows stats in miles. Considering that most of world use the metric system I think fixing this would be nice! Thanks!
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by John Swindells on 09 August 2021
Thanks for pointing this out, Riccardo. It should work correctly now!
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by Mike Kear on 28 February 2021
If I've ridden 79 centuries shouldn't I need to ride 21 more to get a E of 100? My latest update says 19. I am misunderstanding something? Many thanks.
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by John Swindells on 28 February 2021
Hi Mike, the reason for this is because of the multi-day rides that you've done. For the purposes of the Eddington number these get split up into an estimated number of miles for each day. Well done with your big miles!
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by Mike N on 15 February 2021
What a great little tool !

Thanks a lot for this.

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by Robert Armouru on 11 January 2021
The buttons for virtual/walk/run show various values but, when clicked on, do not render in the same way as the 'ride' button
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by John Swindells on 11 January 2021
Hello Robert, there was a bug in the url for switching between activity types - should be fixed now!
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by Pedro Q on 13 December 2020
Hi John,

Love your work! I noticed that some of my runs in 2019 were not picked up, especially in the second half. Everything else seems fine (from 2011 to 2020). It's just a few months in 2019 that seem troublesome.

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by John Swindells on 14 December 2020
Hi Pedro! Glad you're enjoying it :)

I suspect that your missing runs may not be public. Alternatively the activity-fetching may have gone wrong. Either way, you'll need to re-fetch your activities again; see the info in the "Help" link at the top left of this page.

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by Carl J on 17 November 2020
Hi John,

For some reason, looks like my Eddington is stuck on miles, even though the preference is showing Kms.

Tried to press the Update button and also so a refresh, but no go.

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by John Swindells on 17 November 2020
Hi Carl, yes this is a bit confusing! For now you can click the "switch to metric" link (one of the bullet points below the list of targets). I'll look at making metric the default if that's your chosen preference.
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by Peter on 21 October 2020
Hi John,

I just discovered this page and it's very interesting! But, setting a "Distance preference" to "km" I'm still getting E-numbers in left column in imperial, not in metric. At least, "Metric Ride Eddington Number" and "Ride Hour Record" as well. Or am I missing something?

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by John Swindells on 21 October 2020
Ah, I just fixed a mistake in the display of the metric Eddington number - so you should see the correct stat there now!
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by andy on 13 October 2020
Hi

Is there somewhere you can add rides that were not on Strava from a while ago? Ive got 9 on Strava of 100 mile plus but have another 15 in history.

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by John Swindells on 13 October 2020
You can add rides manually to Strava, no matter how long ago they were. After you've done that, head back over here and see if the rides have been added. If not, you may need to re-fetch your activities from scratch. Note that the rides must be publicly viewable for them to be included here.
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