If you’re also planning to run but just haven’t started training yet: get started. If you need inspiration: get a new pair of sneakers. If you need ibuprofen: go to the pharmacy.
If you need a guide to training, consider this one, which is pretty easy to follow.
Prior to last years Broad Street, my longest training run was 8 miles. I know the plan has 9, 10 , 11 mile runs included. A few of us think that’s overkill: Try to work your way up to a long run of 7-8 miles. The crowd on Broad Street will carry you the other two.