I just watched the Olympic distance triathlon- so exciting! Amazing finish for Simon Whitfield!
The ironman, aka full distance triathlon :
3.8km (2.4 mile) swim, 180km (112 mile) bike and 42km (26.2 mile) run!
The ironman training:
Miles swum every week by top ironman pros: 18 (29km)
Miles biked per week: 350 (560km)
Miles run per week: 60 (96km)
Calories burned weekly: 30 000
Extra meals per week an ironman eats: 42
Pounds an ironman would lose per month without these extra meals: 34