Gregg is getting serious about this 2:59 stuff and has hired 2:14 guy Nate Jenkins, our guest in Episode 66 (we first spoke with Nate in Episode 35), to take the reins on his training plan. With one week down under the plan and 10 to go before the Sept. 16 Berlin Marathon, Gregg describes his first assignment: 12 x one mile at marathon pace, with a relatively swift recovery between reps. We geek out on the details.