Ignore trigger unless completed

[MutedJam]

When self-hosting n8n, you could use this example provided by Jan to see if a workflow is already running:

Multiple webook calls overlaping

Btw. if you fear that multiple of that cron workflows could run at the same time. You can use the following workflow to check first if it is running already and only delay the next run until the existing execution finished:

To test this on your end, you would need to save your workflow before running it (otherwise no workflow ID would be assigned).