#21 Do Hills Actually Pay the Bills?

In this episode, Emz and Tim break down why hill running is more than just a toughness test for triathletes. They explain how hills can improve running economy, form, cadence, and race-day durability, while also covering how to use hill reps safely if you are injury-prone.Tim also distinguishes between short hill reps, longer hill reps, and hilly long runs, with practical guidance on when each one makes sense. Emz adds race-day context from Sunny Coast and shows how these ideas show up late in a run when form starts to fall apart.Key topicsWhy hill running was originally used to improve form, reduce overstriding, and improve cadenceWhy hills are not mainly a pure leg-strength toolHow hills improve running economy, repeated sprintability, ventilatory threshold, and lactate clearanceThe difference between feeling fast and feeling durable late in a raceWhat “mashing out” looks like in running, including hip drop, sitting in the bucket, overstriding, and brakingHow hills reinforce a push-based running pattern, helping runners land under the body and drive forwardHow short hill reps, longer hill reps, and hilly long runs serve different purposesHow injury-prone athletes can use treadmill hill work to reduce downhill stressWhy a 5–6% gradient is recommended for triathletes instead of very steep inclinesTimestamps00:00 – Sunny Coast race recap and Tim’s return to outdoor riding 01:33 – Tim’s foot recovery and first ride outside 02:03 – Sunny Coast conditions, draft-fest bike leg, and race-day chaos 04:56 – Emz’s mental state on the start line and second-half run turnaround 06:06 – Swim suit drama, plus PBs across the swim, run, and bike power 07:47 – Why this episode is about hills and running performance 08:21 – The real problem hills are meant to solve: better form and economy 09:24 – What hills improve: running economy, sprintability, threshold, and lactate clearance 10:47 – What late-race form breakdown looks like 12:15 – Running as a push exercise, not a pull exercise 13:15 – How hill running changes posture, foot strike, cadence, and contact time 14:32 – How to spot mashing out in late-race photos 15:01 – Why gym work, consistency, and intensity support run durability 18:22 – Short hill reps: 15–30 seconds, high quality, lots of recovery 19:20 – Longer hill reps: 2–6 minutes to build fatigue resistance 20:44 – Long hilly runs for off-season aerobic development and trail variability 21:11 – Using hilly long runs for race-specific pacing and fueling practice 23:07 – Treadmill hills for injury-prone athletes 24:08 – The ideal body position for good hill running 25:33 – Why triathletes should aim for a 5–6% incline 26:16 – Downhill running, knee stress, and the importance of strength work 29:36 – Final verdict: hills do pay the billsNotable quotes“Running was a push exercise.”“Hills do pay the bills.”“Control what you can now control.”Action itemsStart with short hill reps of 15–30 seconds if you are new or cautiousUse plenty of recovery between reps, including walking back down when neededFocus on posture: tall chest, lean from the ankles, strong arm drive, and high cadenceUse a treadmill if downhill running aggravates your bodyKeep the incline moderate at 5–6% for triathlon-specific workUse hilly long runs to rehearse race pacing and fueling if your event is undulatingCome find us Cartel Coaching — Swim. Bike. Run. Together.