Lucas, 9, has a rare condition that limits his ability to walk and talk.
Jonathan Brownlee nearly fell over, but brother Alistair carried him for a silver-bronze finish.
After an amputation below his right knee, the U.S. Naval Academy graduate finds new ways of competing -- and motivating others.
The historic achievement left both siblings on the ground.
After years playing inside arenas, the former basketball star has become quite the outdoorsman.
Arizona Man Thrives In Triathlons Despite MS
Couple Juggles During Triathlon For Charity
The seven-time Tour de France champion is quietly dominating Ironman qualifiers.