About Jon

The mission

I’m Jon Underhill, an independent bike fitter and founder of CORE Bike Fit. My mission is to help cyclists of all abilities discover their Optimal Rider Experience — an individually tailored fit that enhances comfort, performance and enjoyment on the bike. That mission inspired the name CORE Bike Fit and remains at the centre of everything I do.

“I want to help as many people as I can enjoy riding their bicycles.”

Shoes and feet

My family background is shoes and feet. I would have been the fifth generation of master shoe repairers if I hadn’t fallen in love with bikes. It’s no coincidence I focus on the interaction between your feet, shoes, cleats and pedals — to me the single most overlooked and misunderstood interaction with any bicycle. #focusonyourfeet

Been there

Having struggled for years with tight shoulders and neck pain when riding, I know how it feels to not be comfortable on the bike. I used to just grit my teeth and bear it, thinking it had to be this way. Fortunately I now know what was causing it and, more importantly, how to solve it.

Training

By learning from some of the industry’s leading bike fitters and movement neurologists, I have developed a skill set that lets me provide advanced bike fitting techniques personalised for you. I’m an IBFI Certified Fitter, Level 2.

Independent

As an independent fitter I am not tied to using any product or to selling things as a traditional bike shop might. I don’t suggest anything I wouldn’t use myself.