40k Course with lots of turns, aero helmet or regular helmet?
http://assets.teamusa.org/assets/documents/attached_file/filename/16859/DuWorldsAgeGroupBIKE09.pdf
aero and fugheddaboudit.
Unless it is hot - and then fuhget the aero one and get something that is cool (as in has vents).
Yeah, 'cuz nobody wears an aero helmet in hot multisport events. Like say, Kona. Or STX.
It was 95 at Nationals and aero helmets weren’t an issue there.
I doubt it will be as hot in Charlotte in a couple of weeks. Its possible, but unlikely.