kudos to your kid. he's a stud. you mentioned his goal, not your goal for the race
I am running the NYC Marathon in November
Here is a goal for you--my son who is 7 is shooting for a 57 minute 10k in the 4th of July race. Last year at 6 he ran a 1:01:01
We did a warm up tonight and he did 2 miles in 14:58 so I think he can do it--but this course the BIGGEST uphill I have ever seen-people even avoid it with their cars!!
GL