Zwift closing while trying to create or edit a custom workout [Sept 2025]

Known Issues
1

Zwift is crashing every time I am in the middle of creating a custom workout. At some point, I will be editing the interval lengths and the moment i press a number key on my keyboard the entire program instantly closes. I have even seen this happen when editing the name of the workout, where as soon as I press a number key, everything closes instantly and my workout is lost. It has happened both when building a custom workout from scratch or when saving and editing an existing workout. It is driving me absolutely crazy. Please help me.

I am using a Macbook Air (M1 2020) with 8GB memory and Sequoia 15.4.1

2

I was able to replicate this crash on Zwift 1.98, M1 MacBook Pro running Sequoia 15.7.

I created a new custom workout, added one interval to it, I was able to enter a few numbers in the title, then more for the interval duration, put some in the description, then I went back to the title and typed some more numbers and it crashed. I only typed numbers.

I did another test where I only pasted numbers from the clipboard, it seemed to be going well - pasted hundreds of numbers - but then I did some more and it crashed. Seems unpredictable how many numbers I entered before the crash.

1 Like
3

Since you’re on macOS, you also have the option to use an external workout editor and manually install the resulting zwo file in Documents/Zwift/Workouts/(your ID)

Examples:

You can also use ChatGPT to generate zwo files.

4

Hi @Brendan_Tobin welcome to Zwift forums.

Shuji at Zwift HQ here. Please see this support article about creating custom workouts. There are some things to know so that they run trouble-free. Might any of the known things apply to you?

5

@Chris_D9 I think you encountered a Mac game crash when editing a workout recently. Does this report sound anything like what you encountered?

6

@shooj

HI Shuji,

None of that applies to my case. I have created many custom workouts in the past and never had any issues until now. I assumed this bug must be related to the most recent update to Zwift.

1 Like
7

No matter what you type into a custom workout, the game should not crash. That is a bug. But since this might take some time for them to replicate and resolve, I think generating custom workouts in a third party app and dropping them into the Mac’s filesystem as I mentioned above is the way to get your work done for now.

9

Thanks both. I’ve added your report to an ongoing investigation.

10

Mine was a bit different, if I went to adjust a ramp up section of the workout, then Zwift would crash to desktop.

11

I am having this issue as well. Zwift closes as soon as I enter any number into a custom workout. Like Brendan, this occurs both when making new custom workouts and when editing an existing custom workout. I am using a Macbook Pro with 16GB memory and Sequoia 15.6.1. This problem did not occur the last time I made a custom workout (it’s been a while - at least a month ago).

1 Like
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