Replay a course in erg mode

[Patrick Gharios]

Hello,

Is it -ossinlr to replay an outdoor course with same grade and recorded power data in erg mode on a hometrainer using GC? Idea is to simulate the same course intensity and train for it indoors

Best regards
Patrick

[Steve Edmonds]

Yes this is possible, I have used this feature a number of times to prepare for a course. You use your own recording of the course or you can someone else’s downloaded from say RWGPS when you are not able to ride the course yourself in advance.
See here https://github.com/GoldenCheetah/GoldenCheetah/wiki/FAQ-TRAIN#which-workout-formats-are-supported-to-control-smart-trainers and also search the wiki.

It may be necessary to smooth the altitude (see https://github.com/GoldenCheetah/GoldenCheetah/wiki/UG_Special-Topics_Activity-Processing#edit-tool-fix-gps-errors https://github.com/GoldenCheetah/GoldenCheetah/issues/3320

Sometimes sudden changes in recorded position or altitude can cause abnormal slopes that make riding the course feel strange, fix GPS errors enables a more natural feel to be obtained.

Steve

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[Patrick Gharios]

Hey, i did import the recorded activity as a workout but it does not reflect the powerdata correctly please find below the actual powerdata vs the power data seen in the workout window

Importing workout shows huge powerdata:

Actual powerdata from the activity is:

Goal is to replay that activity powerdata in a workout as is using ERG mode

Thanks

To view this discussion visit https://groups.google.com/d/msgid/golden-cheetah-users/09f548c4-749b-4b42-bf94-e21bfceccab4%40edmondsfamily.co.nz.

[Ale Martinez]

El miércoles, 27 de agosto de 2025 a la(s) 4:04:04 a.m. UTC-3, Olex Traisky escribió:

Hey, i did import the recorded activity as a workout but it does not reflect the powerdata correctly please find below the actual powerdata vs the power data seen in the workout window

Importing workout shows huge powerdata:

Actual powerdata from the activity is:

Goal is to replay that activity powerdata in a workout as is using ERG mode

That is no directly available, there is a pending issue for that:  https://github.com/GoldenCheetah/GoldenCheetah/issues/294

What Steve comments above is to Train on the course in simulation mode, you can compre power afterwards between simulated and real ride.

That is our recommended way, if you really want to generate an ERG file should not be to difficult copying the power column to a spreadsheet, smoothing, formatting and adding the header.