The first photo is from the 2001 Chicago Marathon — my first real taste of long-course endurance. The second is from this August in Lafayette, where I took on a 24-hour cycling challenge and logged 250 miles with 18 hours in the saddle. I started training back in 1976 to rehab an old sports injury and ended up becoming a lifelong runner. Since then, I’ve finished more than 20 marathons, ultramarathons, full Ironman races, and seven half-Ironman events. These days I’m chasing ultra-cycling. At 67, with 50 years of training behind me, I don’t know exactly what’s possible — but I’m ready to find out.