Eric Spector, 71, started trail running when he moved from New York City to Marin County, Calif., in 1988 and hasn’t pounded the pavement since. Owl Trail near Muir Beach is one of his favorite local runs.Ramin Rahimian for The Wall Street Journal
Intrigued by the idea of running farther than a 26.2-mile marathon, a former CEO started training for 50, sometimes 100, miles instead
Eric Spector, 71, started trail running when he moved from New York City to Marin County, Calif., in 1988 and hasn’t pounded the pavement since. Owl Trail near Muir Beach is one of his favorite local runs.Ramin Rahimian for The Wall Street Journal