UPDATE:

I e-mailed the organizers - specifically Adesporte.

They got back to me in about 12 hours to tell me: "Race 2020 will happen with all the healthcare safety protocols... Are You sure You want to deferr to 2021?, Once You are on 2021, We won´t be able to get You back to 2020."

I replied to assure them that I was in fact sure that I wanted to defer to 2021.

I have not yet received a reply.

I'll post back as soon as I do.