What’s New in September 2026
The highlights this September, plus the full changelog.
Three headline features shipped this month, alongside updates across the plan library, the athletes page and custom zones. The full changelog follows the highlights.
The Training Arc
The Training Arc takes the macrocycle and makes it easier to build, adjust and read at a glance. Set it up around a goal race, or around an athlete you want to develop over the coming weeks and months, and the Arc lays out the blocks that get them there. Volume is tracked against it on the calendar week by week, so you can see at any point whether an athlete is running to plan or drifting off it, and when something shifts you can adjust the arc so it reflects where the athlete actually is.
Automatic Threshold Detection
EndoGusto now reads an athlete’s uploaded training for signs that their thresholds have moved and flags it when it finds one. The change is yours to make: you see what was detected and either accept it or decline it, so the values behind zones and load stay current without anything shifting behind your back.
Notes, Fully Updated
Notes can now be saved to your library and reused anywhere on the calendar, so recurring session briefs and reminders are written once rather than retyped. Files can be attached to them, keeping supporting material with the workout it belongs to. A note can also be hidden from your athlete’s view, which makes it just as useful for your own reminders as for anything you want them to read.
And a bit more
There’s plenty else in this release: Jack Daniels’ VDOT in custom zones, folders in the plan library, customizable and sortable columns on the athletes page including threshold values, replies to comment and note emails straight from your inbox, and automatic plan library updates for businesses that opt in. Athletes can also now sign up on their own. The full notes are on the site.
Coming soon
We’re already working on the next round of the Training Arc, shaped by what coaches have asked us for since launch. Stay tuned as we are moving fast and furious to finish the year out as strong as the athletes you train!
Full Changelog
New
- Training Arc. Lay out an athlete’s macrocycle as a sequence of blocks, adjust it as things change, and track volume against it on the calendar.
- Automatic threshold detection. EndoGusto spots new thresholds in an athlete’s uploaded training and asks you to confirm before anything changes.
- Notes in your library. Save a note to your library and reuse it anywhere on the calendar.
- File attachments. Attach files to notes, library notes and training plans.
- Private notes. Hide a note from your athlete’s view and use it as a reminder for yourself.
- Folders in the plan library. Organize your training plans into folders.
- Customizable athlete columns. Choose and sort the columns on the athletes page, including threshold values.
- Independent athlete signups. Athletes can now sign up on their own and train independently.
- Jack Daniels’ VDOT and more custom zones methods. More ways to build custom zones for your athletes.
- Reply from your inbox. Reply to comment and note emails without opening the app.
- Plan library stays current. For businesses that opt in, plan library content keeps updating automatically.
Improved
- Plan workouts stay linked. Workouts created from a plan stay connected to the plan they came from.
- Moving time on completed activities. Completed activities now show moving time rather than elapsed time.
- Pool swim detection. Your pool length is remembered and used to detect pool swims.
Fixed
- Staying signed in. Sessions now recover instead of sending you back to the login screen.
- Deleting an assigned plan. Deleting a plan now asks what should happen to athletes’ upcoming workouts, and clears them correctly.
- More accurate swim records. Rest at the wall no longer counts as swimming.
- More accurate power and pace records. A bad distance reading from a device no longer throws off your records.
- Character limits. Text length limits now count characters correctly in every language.