It was a few minutes past 10 on Sunday morning when Lloyd Kahn crested a hill known as Insult.
He was shirtless and mustachioed, with a receding shock of white hair, as he trotted up a brambly trail six miles into the Dipsea, the storied 7.5-mile race from Mill Valley to Stinson Beach that is said to be the country’s oldest trail race.
He had already conquered the 672 stairs rising through the forests above…