Track your rides and runs via your iPhone, Android or GPS device, analyze your performance, and compare with friends.
38 years ago I was doing that - training for the '76 Olympic trials (Montreal). Now, at 62 I still wish I was that energetic. My 39 miles and 3200' today earned me 2 Gordon Bierch's and a recliner to watch March Madness. Age has its advantages - but I envy you for NOW. Take advantage of every moment and always remember: suffering is good - watching others suffer is even better!