Kirsten Ferguson Marathon Training Reveals 3 Bold Changes

The Peloton running instructor is back for marathon number two, and she’s approaching it differently this time.

Kirsten Ferguson marathon training is entering a new chapter. The Peloton running instructor once said she would never run another marathon after her first, but she has officially kicked off day one of training for her second. She shared the update on her personal Instagram and on Peloton’s official account, walking followers through three shifts she is making this time around.  

 

 

 

 

 

 

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Kirsten Ferguson Marathon Training Gets a New Speed Focus

The first change centers on her training plan. Ferguson followed a structured plan for her first marathon, and she is keeping that framework in place for round two. This time, though, her weekly cadence is built around speed work. Hill training and long runs anchor her schedule, a shift from her original approach and one she says will shape how she builds toward race day. For a Peloton running instructor who spends her weeks coaching pace and effort on the Tread, applying that same structure to her own marathon prep tracks with how she teaches. Peloton’s own marathon training program follows a similar philosophy, pairing structured speed work with long runs across an 18-week build.

Strength Training Stays, But Gets More Strategic

The second change is less about what she is doing and more about when. Ferguson kept a consistent strength plan during her first marathon build, and she is holding onto that habit for her second. What is different is placement. She is scheduling strength sessions so her legs stay fresh heading into long runs, and she is being more selective about which strength workouts make the cut, leaning toward runner-specific programming rather than a general routine. It is a small adjustment with a clear goal: support the miles instead of competing with them.

Kirsten Ferguson marathon training day one Instagram post

A Mindset Shift Rounds Out Her Marathon Training Plan

The third change is mental rather than physical. Ferguson is committing to feeling every part of the process this time, good runs and bad ones alike. She acknowledged that a rough 10-mile run does not cancel out the work or the eventual finish line. Her approach going in: feel everything, trust the plan, and keep moving. It is a mindset that fits neatly into her broader marathon training plan, where consistency matters more than any single workout. It is also consistent with how she talked about her half marathon PR earlier this year, crediting patience and trust in her training as much as any single workout.

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