My futile pursuit of a last sub-3 hour marathon, 43 years after the first

Aged nineteen, on 22 August 1970, I ran my first marathon in 2:44, followed five weeks later with a 2:41. I was hooked, and in the 43 years since, have run more than 50 marathons. In my 20s I ran a 2:19, in my 30s another 2:19, and in my 40s a 2:38. As I slowed, the love affair began to wane and I only ran two in my 50s, the best of which was a 3:04. Now in my 60s, with an ageing body and chronic injuries, I plan to deploy all of my experience in pursuit of one last sub-3 marathon.