Dathan Ritzenhein, the coach of On Athletics Club, was juggling a couple of jobs on a brisk morning this spring. As members of his elite distance-running team logged hard miles on some deserted back roads outside Boulder, Colo., Ritzenhein seemed determined to murder his pickup truck’s transmission. Ritzenhein grabbed several water bottles from the truck’s cargo bed. “You guys want something to drink?” he yelled as they reached for the bottles without breaking stride. “Just toss them at the next corner and I’ll pick them up!”

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Persons: Dathan Ritzenhein, Ritzenhein, Max Verstappen, Olli Hoare, Joe Klecker, “ Organizations: Athletics Club Locations: Boulder, Colo