🗣️ “Obviously not a direct correlation but he ran that 3:51 on a chewed up cinder track with 1960s spikes and of course no bicarb. 4% difference on the shoes and bicarb and factor in Mondo providing just under a second of time per lap and I begin to realize even more what a freak athlete my dad was back in the day.” Jim Ryun’s son estimates what his father’s 3:51.1 from 1967 is worth given 2026’s trackflation. 🧮 59 years later, the performance puts Ryun at No. 27 on the U.S. all-time outdoor mile list.