Yes there's now Eroica events all over the world, e.g. California, Japan, Spain, plus UK of course, and an Eroica club to give discounted entry!
I read that the Nova Eroica has some shorter timed sections, but group riding possible for the remainder. It's in Buonconvento, south of Sienna and I will probably fly to Perugia and hire a car, though a no deal Brexit could create complications for both those options ( as I was reading in the Sunday Times yesterday...).