Boston Marathon spectating

It is not difficult to find a spot to park your car and walk to the Boston Marathon route in a few minutes.

For example:

1. You can park on Ward St or at the parking lot of Cong. Beth EL Atereth Israel (the parking lot is across the synagogue). I asked a staff member and he told me it was OK.
2. You can also park on Commonwealth Avenue near the Newton Fire Department.