I ran this race twice (three considering the virtual experience) and it's not my gem.
I was expecting to run part of the actual Boston Marathon, instead takes place completely elsewhere.
There is no expo (pretty disappointing) and the after party is minimal.
The course is definitely hilly and to get to the finish line you pass the starting line and you still have to run a bit because the race actually finishes inside the Stadium.
Tshirt and medal are nice, even though the tshirt doesn't have the best fit.
I would recommend this race only if you are local.
If you sign up for the Medley (5k, 10k, and half) you get a fourth medal at the end of the Half and easier access to the porta potties.
I don't think I will run it again.