A big weekend in endurance sport sees us recap Western States, Ironman Frankfurt, the breaking of the backyard ultra world record and a quick discussion into East Africans in Trailrunning. We also touch on Sydney Marathon Elite fields and Challenge Roth drug testing age groupers.

Our guest is Robby Ketchell, a sports scientist and aerodynamics expert who helped engineer the Ineos 1:59 project with Eliud Kipchoge and more recently worked on the Sub 4 Project with Faith Kipyegon. He joins us to discuss the project.

(00:00) Introduction

(00:30) Medical Question

(03:53) David’s Update

(04:56) Xylon’s Update

(11:58) Community Shoutouts

(13:23) Correction

(15:03) Toulouse Win Top 14

(15:40) Backyard Ultra World Record Broken

(19:00) Tyreek Hill Runs 10.10

(20:22) IM Frankfurt

(23:32) Western States

(28:30) Marathon du Mont Blanc

(30:10) Will East Africans Start Dominating Trailrunning?

(32:20) Challenge Roth Drug Testing Age Groupers

(34:55) Sydney Marathon Elite Field

(37:01) Interview Starts

(39:01) How Were Things on the Ground?

(41:40) Did Robby Think Sub 4 was Possible?

(44:03) What Tradeoffs Needed to be Made?

(46:29) Where Else Could Things be Improved with Hindsight?

(49:42) Explaining the Pacing Formation

(55:13) Would Faith Have Been Better off Running Further Out?

(58:20) How Fast Could Faith Run in an Optimised Road Mile?

(1:01:25) What’s Next for Robby?

(1:03:30) Doctor’s Office - Vale Bill Dellinger

(1:05:11) What We’re Watching

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