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:

Get your Eddington Number here! View it for a variety of sports, all-time, per year and per-month. It 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!


82 Comments

by Matthias Heil on 11 February 2024
Damn! The last thing I needed was yet another bike related challenge -- then I stumbled across your site. Brilliant! Many thanks for setting this up!).
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by Mark on 10 January 2024
I see all kinds of chatter about the Eddington Number, but there is no link to see it. The links available just jump back-and-forth from info page to info page. Where is it?
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by John Swindells on 10 January 2024
Hello Mark, you need to click on the orange "Connect with Strava" button to start the process of fetching your activities so that we can calculate your personal Eddington Number. This can take several minutes depending on how many activities, so please be patient!
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by Malc Rawlins on 23 November 2023
Hi John. Quick question: 'My Strava Activity Analyser' says I've done 56 rides of 100 miles, or more, yet the Eddington Targets list says I need 45 more for E100. Only one difference, so no big deal, but I wondered why that might be? Cheers Malc.
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by John Swindells on 24 November 2023
Hi Malc, this will be because your Dunwich Dynamo ride this year got chopped into two parts, since you end on a different day to the start. Your other two DDs don't have an "elapsed time" recorded (see the bug alert at top of this page), so each one is treated as happening in a single day.
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by Keith Morical on 30 October 2023
On the E table, the distance (miles) for 2023 is under-reported by 1,200 compared to what it shows in Strava. I just updated the data. All previous years are also underreported in miles. Also, when I look at the nifty graph that shows rides per distance, it does not include any of my real long rides (e.g. 630, 605 miles) that took over 24 hours. Is it possible that these rides are being truncated? It would not make a difference for the E number but would make the table and graph more accurate in terms of distance (and supposedly time).
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by John Swindells on 02 November 2023
Hi Keith, I'll look into your missing miles.

However, your longer rides will be split up as we are looking at miles ridden per day.

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by Peer on 19 October 2023
my activities from 2021 and 2022 are not included. How can that be solved?
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by John Swindells on 21 October 2023
Hi again Peer, thanks for accepting my follow request on Strava. I've done some spot-checks and those missing activities definitely aren't anywhere on swinny.net. So all I can suggest is that you "refresh from scratch"; see the instructions & link in the "Help Guide" at the top of this page. Hope it works!
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by Javi on 28 August 2023
Hi John,

First of all, many thanks for this tool.

Is there a way to stop receiving emails for a new Eddington number in a specific sport? Since you've changed the way the swim number it's calculated, I will receive an email every day. It was more realistic when it accounted for km instead of the current meters

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by Jane on 15 September 2023
Hi John

My E number has gone back 1 from 103 to 102 (for all activities). I noted you had changed the formula to make the conversion between km and miles more accurate but I record all my activities in miles so I’m not sure why my E number would be impacted?

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by Jef Ott on 27 August 2023
After a ride on Friday, my Edd was 74. Yay!!! Now it is 73 Booo!!! What happened?
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by John Swindells on 28 August 2023
Oh dear! The reason is that I've just made the conversion from metres to miles more accurate, and the consequence is that a few of your rides have now dipped below 74 miles for the day. Sorry about that!
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by Matt on 22 August 2023
Hi John. None of my rides from 2020 or 2021 are showing anymore. Is there a Strava setting I need to adjust? Thanks.
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by John Swindells on 24 August 2023
Hi Matt, can you try to "refresh from scratch" again please?
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by Oliver on 19 August 2023
My gravel rides aren’t being picked up, I’m not sure my trail runs are either. Ideally gravel would be combined with road cycles and trail with road runs to get a proper e number for each.
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by John Swindells on 24 August 2023
Can you try to "refresh from scratch" again please? I've got more logging now, so should be able to see exactly which date ranges are being used for activity imports. Do be patient with the activity fetching - it may take several minutes if you have thousands of rides etc to download!
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by Dennis V. on 03 July 2023
Are virtual rides considered in your Eddington calculation? Or just outdoor rides?
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by John Swindells on 03 July 2023
Hi Dennis, virtual rides are in a category of their own, so have no bearing on outdoor rides.
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by Adam on 01 July 2023
Any possibility of showing swimming in meters?
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by John Swindells on 28 August 2023
After a bit more thought I've changed it back to km or miles, as metres/yards will be too short for most people. I'll look at creating a toggle option so that you can choose which one to use.
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by Frank Z on 03 June 2023
Why am I in the top 34% in kilometers and top 24% if I switch to miles?
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by John Swindells on 05 June 2023
Hi Frank, these percentages will vary because of the combined "distance and count" property of the Eddington number. Have a look at the charts over on Calculate your Eddington Number (there's a link to the metric charts too) to compare your own E-numbers.
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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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