DH has run several marathons (PB around 3 hours 15) and is asking to do 1 with DS. DH regularly runs with DS in buggy (10k last week for example).
My view is DS strapped in a buggy for 3/4 hours is not a good idea.
DH says he can stop and have breaks but I think it's only going to make the whole thing longer.
WWYD? Let DH run the marathon or stick to my guns and say no?