Not directly. LeCoach itself has no Google Calendar, Apple Calendar or ICS export.
However, our integration partner Intervals.icu does offer calendar sync. Since your whole LeCoach plan lives in Intervals.icu (see how the sync works), you can subscribe to it from Google Calendar, Apple Calendar or any calendar app:
In the Intervals.icu calendar view, click Options.
Choose Export calendar and copy the calendar link.
In your calendar service (Google Calendar, Apple Calendar, ...), add that link as a calendar subscription.