There are no requirements to enter the 9:
The event was instituted in commemoration of the fabled run of the Greek soldier Pheidippidesa messenger from the Battle of Marathon to Athens, who reported the victory.
For those heading back to the city, earlier shuttle services will depart Mission Bay at 9:
Overconsumption is the most significant concern associated with water consumption during marathons.
Your mileage should gradually increase each week.
When the Boston Marathon opened up registration for its running, the field capacity was filled within eight hours.
Ideally any other workouts you do would be non-impact and compliment your running routine.