I used to do tri's 10 years ago. Was sorta into it. Friend was super into it.
Tri athletes are super into aerodynamics over weight (weight is still important but aerodynamics are more so IE disk wheel inserts etc etc). The reason being because the more effort you spend on the bike the more gassed you are on the run coming up after. (also see below there's no pelotons in tris/TT)
Because of the square law of wind resistance basically bike times haven't gotten faster but run times have because riders are conserving more energy while riding at the same speed because of efficiencies in the bike designs.
Also you are never allowed to draft in triathlons and must maintain a certain distance behind the rider in front of you unless you are passing on the side unlike
Tri athletes are super into aerodynamics over weight (weight is still important but aerodynamics are more so IE disk wheel inserts etc etc). The reason being because the more effort you spend on the bike the more gassed you are on the run coming up after. (also see below there's no pelotons in tris/TT)
Because of the square law of wind resistance basically bike times haven't gotten faster but run times have because riders are conserving more energy while riding at the same speed because of efficiencies in the bike designs.
Also you are never allowed to draft in triathlons and must maintain a certain distance behind the rider in front of you unless you are passing on the side unlike