First time I got Covid was back in late summer of '21, it was the Delta variant. It screwed me up and I didn't even get back on the bike until the next year. I'm a fit, youngish(30s) XC racer too, so I was surprised by how it affected me.
The next time I at least had a positive test was back in December of this last year...compared to the Delta, this one was a joke. It felt like a very minor cold, scratchy throat for a day and then a few days of nasal congestion. I was planning on taking a week off the bike anyway(my end of season break,) so I did that and was back to doing some zone 2 indoor rides after that week. The first ride back, I had some more-than-usual cardiac drift towards the end of the workout, but that quickly resolved itself by the next session.