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Correct and Edit bad GPS points in an Activity

Occasionally I've had problems with my cycling GPS data, and have been getting spikes and spurious readings which result in strange route fits, and miscalculation of actual distance traveled (usually overestimated). Are there any plans to allow for manual pruning or manipulation of bad GPS data points by the user, thereby allowing Strava to "fit" the route more closely to the actual ride? Obviously, my phone is the culprit for the bad data, but it would be really useful to have the ability in Strava to either 1) remove/edit the wonky GPS points, and/or 2) to fit/nudge the route manually to existing roads on the map when the route is not properly tracked. 

I've heard that other cycling apps can do this, but I don't have any experience with these. I think it would be very helpful for those of us who want our Strava logs to reflect our actual mileage :) I realize it's probably easier said than done, and of course this would effectively kill any segment stats in the affected area. But since I use Strava mostly for mileage and mapping, and less for segments (though I do use and enjoy these), I wouldn't be as concerned about the effects on the segment calculations. 

Anyways, thanks for considering this. Keep up the good work!

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241 條評論
  • One more request! This is the only thing I hate about Strava!

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    • This is now 4 years old, and still there isn't a solution as in runkeeper, where you can edit an activity that was incorrectly recorded, or where the recording stopped halfway through. Went three hours on a bike today, and strava decided to have a break after 40 minutes and never come back.
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  • Here's another lonely voice telling another sad story....Went on a ride and in the middle of the ride I stopped for a bit and paused Strava....started back up and forgot to unpause. Unpaused and Strava happily pretended that I flew in a straight line from the pause location to the unpause location. I would love the opportunity to edit the track to snap to the roads/trails that I was actually on. This feature should work similar to the google maps route editing capability. If people are worried about people gaming the system for KOMs then use the phones GPS tracking history to ensure that the user was actually at that location at the time of interest... Add it to the next dev sprints PLEASE. :)

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  • Is there anyone listening / reading these comments at Strava. Come on Strava do something about this missing editing function, it's been going on too long now.

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  • Agree fully. Missed out on a long event segment today because my GPS track had me riding parallel to the road in a field for a bit. The distance wasn’t even different! Frustrating that I can’t correct that one small error out of a nearly 100+km segment. Strava should snap to the known road in this situation.  

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  • Probably time to realize, Strava is really just a social networking app. Not a real training tool. If you want to track accurate activities there are many other apps out there for this purpose. I won't name them here since they are so easy to find. The forum moderators already stated that this feature is not a priority a couple times over the years and they haven't come back lately and said otherwise as far as I can tell. Strava is good for some things but not everything. And that's fine. Garmin Connect can sync with many other apps and I'm sure Suunto does as well.

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  • The GPS track editor at http://www.gpstrackeditor.com/ can be used for this, then manually upload the track.

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  • I've tried to edit the occasional "GPS drift" laden Strava activity over the years.  The first thing you should try is to export a .gpx file from Strava, upload it into RunKeeper, and edit your activity by hand via drag-and-drop in RunKeeper.  You can then export your fixed .gpx file out of RunKeeper and upload that to Strava.

    BUT, there's one catch - and I bet this is why Strava has deferred this feature for so many years - once you start editing your activity in RunKeeper you have too much power.  You may find yourself having to drag-and-drop HUNDREDS of points to try to correct the route.  A screwed up route starts out VERY screwed up.  It's not just a little off.  And the "Snap to roads" doesn't help.   Plus the RunKeeper editor is awkward and slow to load.  One wrong move and it makes your route even more convoluted  So, not only is the edit awkward and prone to creating errors but the user can easily make it worse by trying to fiddle with it.  Most of the times I've tried to fix an activity I've mangled and garbled it - making it much worse.   I've just given up on editing since it always leads to an even more broken route.  So in this case, giving a user editing capability actually makes for a worse user experience. 

    Personally, I've focused more on how to calibrate my Garmin device to try to avoid those spotty days, rather than trying to edit an activity after the fact.  If the activity is way off I just try to not worry about.   Getting upset about a missed PR attempt is wasted energy. 

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  • Agreed. Have tried various editors and usually end up with some crazy result. Either surging pace spikes or just a single flat pave throughout ; the latter with snap to roads I think. Usually just tolerate track as is unless it busts my 'best estimates time' stats, in which case I'll clip to keep the good bits and /or add manual runs to at least record the distance. All very frustrating but sh!t happens.

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  • I think STRAVA doesn't use Kalman filtering-base (inear quadratic estimation) algorithm for GPS data. 
    I guess Strava takes raw gps data from chipset as is. Some processors (for example MTK) provide already processed tracks, some not.

    There's the the gps tracking test of my processor (Qualcomm Snapdragon 801 - red track ) and compare with MTK (blue track) https://habr.com/company/highscreen/blog/380005 . EVERYTHING IS CLEAR.

    It's very pity thas't so serious brand like Strava has a big problem with optimisation and final result depends from processors on 100%. Another applications have algorithms for process bad gps data and building normal tracks.

    In conclusion.

    Only one way to solve the issue is implement a smart (and probably forced) algorithm to procesing gps data from chipsets. I think it will not take so many time and resourses, because STRAVA processing data on their own servers, not in application

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  • I absolutely agree that this should be a feature on Strava for all the reasons mentioned previously. I've previously forgotten to stop Strava when in the car going home (although it was amusing to see comments re my constant Queen of the Hill achievements!) and have been able to crop the route. However, extending the end point to where I've actually finished (when Strava has not restarted following autopause (and yes, it's enabled on my device), would be helpful.

    PLEASE PLEASE PLEASE can this be made one of the priorities by the Strava team, when so many have been commenting on it!!

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  • Another bump for fixing obvious data flaws.  Crop is useful if you forget to end the ride or start too early, but what happens to me a lot is that my watch doesn't pick up the GPS signal until I'm a mile down the road.  The GPS data then shows a few minutes of being stationary then instantly going to 20mph.  My ride also ends where it starts.  This case seems fixable w/o writing a full blown data editor or needing to worry about a lot of fraud.  A button that says "started where ended" that is only enabled if you have time with duplicated GPS points at the beginning of the ride/run... or maybe just add this logic to the "Correct Distance" command.  I promise to ride more if you add this feature ;)

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  • I have ridden my bike across rivers and even Lake Washington one day.  It would be nice if it at least tried to align the GPS stop moment with a logical route to the location it was able to pick signal (I do not think it is signal, I think it is the app).  Google Maps understands likely bike routes when you put two locations in, so the data and capability is out there.  Ride with GPS seemed pretty solid on a 200 mile ride I did (STP).  I am going to try that one for awhile and see if a permanent switch makes sense.

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  • For activities that have been matched with a race like https://www.strava.com/activities/1890384566, it would be great to have an option to just replace the GPS points with the official route. You can see how my watch went crazy in the downtown, with all the skyscrapers blocking its signal, adding an extra kilometer to the distance.

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  • Today, while using Runtastic app in my run, GPS got lost in 3rd km. It recovered after about 700m, but the app considered point to point (aerial) distance between these points-where it got lost and where it recovered, which was obviously less than the actual distance as the lost segment had 2 turns. It happens with Strava too. I tried a trick, which really worked. Exported the gpx file to Runkeeper.In runkeeper, there is an option to edit the run, where you can 'SNAP it to the road'. Problem solved.

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  • Raceshape worked well, but Strava bought it and shut it down. What's wrong with you all at Strava?

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  • Another request for the same question. Please add this feature. I mean allow editing of the gps track. 

    If you focus on anything else but your product, you will not have a long life. 

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  • My run last night only saved 5 points along my path so the route overall is quite inaccurate. I wish I could adjust this after the fact.

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  • i bought a garmin vivosport for cycling and it's awesome.  it tracks gps going over a bridge in the bay.  with my phone it would track a diagonal line from the beginning of the bridge, over the water / bay, connecting to point well beyond the end of the bridge, where the gps picked back up.  

    the gps  in the garmin vivosport is so accurate; no tracking through peoples lawns / houses when riding in the street.  Pin point accuracy.  It also has autopause and will show you your speed, heart rate, distance and tons of other metrics, while riding / running.  shows intensity of the workout, heart rate, oxygen burn and tons of other things.  sure it costs 160, but its better than strava and you'll make up the money not having to pay for strava premium (which has less features)

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  • Strava getting better but really need to allow you to edit your own data to correct for discrepancies... lost 1/4 of my walk due to auto pause not finding GPS after taking 5 minute break to go in a shop.

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  • I've realized my GPS tracking is bad if my phone is in battery saver mode. If you're running into issues with sporadic GPS data try disabling Battery Saver (Android info: https://support.google.com/android/answer/9079240).

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  • Well, if you don't pay, you are the product. But keeping this attitude to your paying customers is a no go.
    As long the is no editor, for sure I will not put a dollar in.

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  • I'd like to put my vote in for the ability to edit an activity. Even if it's just the ability to add some manual way points to a route I've ridden where the GPS dropped out for some reason. Similar to adding way points to a route builder; I realize it's probably a technically challenging problem to solve, but I for one think it would be valuable...so do 7 pages of posts from users. Failures happen while you're out on the road and it'd be great to not have to stress about stats/mileage not being captured because you can "fix it" in some way when you get home.

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  • I just followed the idea on this post: https://red-route.org/articles/how-fix-strava-activities-with-incorrect-gps-data

    Basically export the GPX file, upload it at https://opoto.github.io/wtracks, modify the way points and export it back to GPX and reimport it into Strava. Took about 5 minutes.

    @strava: the GPS editor on that second link is open source software: https://github.com/opoto/wtracks. In an earlier response you wrote that it would be quite intensive to add an editor. You should try getting in touch with the author of that software and see if he'd be interested in collaborating or something ;-)

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  • Agree! The only time I did a massive cat 1 climb Mt Wellington, Hobart, Tasmania, Australia) & the GPS went bonkers halfway up and now I don't have a segment time. Be great if I could drag the points back onto the road or just delete them and strava auto snaps to the road. As the road switches back, I dont the re-route.org suggestion above will fix it.

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  • Took a 9-mile hike in the Armstrong Woods in CA that turned out to be 30.85 miles. There are several spikes that I clearly did not travel and although I would love to take credit for a 2:19 min/mile, there are very obvious GPS points that need to be deleted.  It's sad and very disappointing that route are not editable. Please, someone behind the scenes, fix my hike. I was proud of it and now feel silly posting it to fb.

    Consider all the people who have similar problems but do not bother trying to find this help thread. seems like such a simple fix to delete certain points and have it connect to the next in line.

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  • Six years later and this thread is still going. Wow.

    It should be a simple thing to delete the *small* number of obviously defective points on this map.

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  • Clearly, Strava needs to add the ability to edit the map, and calculate the differences.  Map My Ride allows me to do this with no problem, which I have had to do upon occasion when the GPS didn't work properly.  In addition to editing the map, we should be able to edit the start and end times as needed.  If Strava has some question about people's integrity about messing with the routes, it would be a simple matter to add an icon indicated a map or information had been edited.  Since I am relying on Strava to keep track of total mileage for the season, having inaccurate mileage information is a major consideration.  In terms of things such as calculating feet climbed and such, since the Strava maps are based on Google maps, that shouldn't be an issue.   I am new to Strava since getting a Garmin for my odometer.  If this isn't changed, I'll go back to Map My Ride.

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  • I believe this is not a trivial thing for Strava to build, but I can't believe that after years of complaints there has been 0 progress.

    Every now and then, likely due to GPS connectivity issues, I will have a couple of waypoints in my run that jump all over the map. Not only do they distort the figures for that specific run, but because Strava then thinks that I ran a KM in 45 seconds, that now becomes my all time best. Essentially ruining the feature of tracking your personal bests forever.

     

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  • I wish complete editing were available, but it's no longer fair to say that no progress has been made. They now have a way to trim of data at the start and end of activities! https://support.strava.com/hc/en-us/articles/216919437-Crop-Tool-for-Activities

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