From a Wall Street Journal online article:
Tuesday, Friday and Sunday, he is out before dawn for a 1.5- to two-hour run with Abby and Finn on one of the many trails accessible from Tucson along the Catalina Highway. The dogs are disciplined enough to run off-leash in a pack with him. The farthest he has taken Abby is a 13-mile, three-hour run. “She came home quite tired, as did I,” he says. When training for a marathon or longer distances, he adds a solo run on Wednesdays. He’ll run up to 23 miles on a network of paths in Tucson called the Loop.
Mr. McLean has had Achilles tendon problems as the result of tight calf muscles, and says he stretches for 15 minutes every night and before his morning run.
Like many marathoners, John McLean trains with running buddies. But if he isn’t keeping pace, he gets barked out. Mr. McLean is a dog-lover who logs miles with four-legged friends, both his own and rescues.
For years Mr. McLean, 63, ran solo. He and his wife, Barbara McLean, live in Arizona. They worked in the aerospace industry and travel made it tough to look after a dog. The day after Mr. McLean retired in 2014, he came home with Abby, a 10-week-old Chocolate Labrador.