Is 27 too late to start graduate medical school?

I'm starting my masters this year. I wanted to do it full time so I would start graduate medicine at 26yo but I may have to do it part time because of work. I have already had my University experience so I'm not bothered about being seen as an older student and I won't be living in dorms.

Are there any medical students out there who have experience of starting medical school at a later age?