Yeah, right... 100 years old? He doesn't look older than 96 or 97 years to me. : ) But seriously, a 100 year old running like that is amazing. Hope I can join him in about 52 more years.
Every time I THINK i am too old for Skyline at 74, I think of Ulrich Inderbinen who climbed the Materhorn in Switzerland at age 90 and 370 times total.
He continued guiding until 97 and reluctantly gave up skiing at 95
http://www.telegraph.co.uk/news/obituar ... binen.html