复数：triathlons
A triathlon is an endurance athletic event consisting of three stages, without a break: swimming, cycling and running, in that order.
Triathlon Organizers Praise Naperville and Look to Future
Sudden death during the triathlon
Fluid balance during and after an ironman triathlon
Energy balance during an ironman triathlon in male and female triathletes.
Nutrition for endurance sports: marathon, triathlon, and road cycling.
No evidence of oxidative stress after a triathlon race in highly trained competitors
Diagnosis and prevention of hyponatremia at an ultradistance triathlon
Outbreak of leptospirosis among triathlon participants and community residents in Springfield, Illinois, 1998.
Weight changes, medical complications, and performance during an Ironman triathlon
Relationships between running mechanics and energy cost of running at the end of a triathlon and a marathon.
