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Field Notes

The physics and tactics of gravity racing

Essays from the timing data. Each post takes one idea, one race and the numbers the broadcast doesn't show, and works out what actually happened. Openly AI-assisted; the methodology is at the foot of every post.

FIELD NOTES // 02 // LOUDENVIELLE · 2026 · ELITE MEN & WOMEN

For Once, the Fastest Rider Didn't Win

At Loudenvielle the order on paper and the order on the day came apart. The winner was only fifth-fastest across the weekend, and the two quickest men finished third and twenty-third. Everywhere else this season, the paper order has held.

Read post → ~6 min · UCI / Chronorace
FIELD NOTES // 01 // MONA YONGPYONG · 2026 · ELITE MEN

The Traction Budget

Every input on a downhill bike draws from the same finite pot of grip. Braking, cornering, loading the bike. The riders who go fastest spend it best. Amaury Pierron had the World Cup opener won with a corner to go. This is where it went.

Read post → ~7 min · UCI / Chronorace
Gravity Lab // Beyond the broadcast.
FIELD NOTES · Not affiliated with the UCI or any team · sam@gravitylab.live