To reiterate, the independent variable is the thing over which the researcher has control and is manipulating. In this experiment, the researcher is controlling the food intake of the participant. The dependent variable is believed to be dependent on the independent variable.
This grueling triathlon distance consists of a 2.4-mile swim, a 112-mile ride and a 26.2-mile run. Ironman pros post bike splits as fast as four hours and 15 seconds -- a more than 26 mph average pace, which gets all the press. You may wonder how more average mortals perform on the bike portion of the course so you can gauge your training and potential race-day performance.
Swim 2.4 miles in 1:16, Bike 112 miles in 6:25, and Run 26.2 miles in 4:54. But not all races are created equal, and the time it takes to complete an ironman will also depend on the course. See our Finish Times by Age Group in 25 Ironman Triathlons analysis.