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7 shoes. Not a single daily trainer.
Mar 15, 2026

7 shoes. Not a single daily trainer.

Why your shoe rotation might be working against you.

Tim Roozendaal
Tim Roozendaal
Jack wanted to race in carbons
Mar 08, 2026

Jack wanted to race in carbons

I told him not to

Tim Roozendaal
Tim Roozendaal
He ran a sub-3 marathon. Two months later, he was falling apart.
Mar 01, 2026

He ran a sub-3 marathon. Two months later, he was falling apart.

When your training is out of sync with your life

Tim Roozendaal
Tim Roozendaal
Running is not a sum of parts
Feb 25, 2026

Running is not a sum of parts

Why fixing one thing at a time never works

Tim Roozendaal
Tim Roozendaal
I ran a 1:24 half marathon.
Feb 22, 2026

I ran a 1:24 half marathon.

Here's what actually made the difference.

Tim Roozendaal
Tim Roozendaal
The progress nobody tracks
Feb 15, 2026

The progress nobody tracks

The metric most runners ignore

Tim Roozendaal
Tim Roozendaal
I didn't quit smoking. I just stopped.
Feb 08, 2026

I didn't quit smoking. I just stopped.

How changing who you are changes what you do

Tim Roozendaal
Tim Roozendaal
My Lactate Test Results Are In
Feb 01, 2026

My Lactate Test Results Are In

Turns out I've been training right (mostly)

Tim Roozendaal
Tim Roozendaal
What influencers won't tell you about Hyrox shoes
Jan 25, 2026

What influencers won't tell you about Hyrox shoes

What actually makes you faster at Hyrox

Tim Roozendaal
Tim Roozendaal
Why does nobody look at the shoes?
Jan 18, 2026

Why does nobody look at the shoes?

Two stories about the healthcare blind spot I keep seeing

Tim Roozendaal
Tim Roozendaal
When "just go run" doesn't work
Jan 11, 2026

When "just go run" doesn't work

Structure beats motivation

Tim Roozendaal
Tim Roozendaal
When more doesn’t help
Jan 04, 2026

When more doesn’t help

What freezing in London taught me about running shoes.

Tim Roozendaal
Tim Roozendaal
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