He hates treadmills, thinking that that if you want to train for road races, you have to run on roads. Treadmills, he says, are “propelling you over the running surface.” When you run, he adds, “you propel yourself over the surface,” which can include hills, flat areas, and places where the surface is uneven. “That’s a harder effort for sure,” Tom said.
So, Tom told me: Don’t go to the gym. Run outside.