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Data science, applied maths and modelling for professional cycling.

velodata answers the questions of cycling teams, brands, race organisers and sports-tech companies with data: how hard a stage is for each rider, whether a product claim holds, why riders abandon a race.

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What velodata does

01

Race and course analysis

Stage and course difficulty, heat and weather along the route, and who abandons a race, when and why.

02

Equipment testing

Statistical comparison of bikes, wheels and tyres, and review of product claims: what a test can really prove.

03

Prediction and rider selection

Expected results stage by stage, and support for deciding who to line up.

04

Modelling and machine learning

Made-to-measure projects: mathematical and statistical modelling, prediction, reinforcement learning and computer vision.

Selected work

Heat across five editions of an ultracycling race
Finished

Which edition of the Madrid-Barcelona by Pedalma was the hottest, and where on the route does the heat hit? A comparison built from my own GPS files.

DNF risk in self-routed ultracycling
In progress

Do women and men abandon differently in the Transcontinental Race? A survival analysis of 568 solo riders.

A physics-based stage difficulty score
In progress

A stage difficulty score based on physics and specific to each rider, meant to replace gradient-only profile scores.

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From the blog

Strip plot of the standard deviation of the watts per speed ratio across my repeated rides. Most points sit below 0.5 and a few reach 1.4.

Tubeless vs. Tubular: Are SRAM’s Claims Inflated?

equipment

Let’s delve into SRAM’s experiment with the Movistar cycling team. This article explores whether the methodology genuinely demonstrates the superiority of tubeless tires or if there is more to the story.

Oct 1, 2026
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Behind velodata

velodata is the work of Juanfran Garamendi: a PhD in Computer Science & Mathematical Modelling, 15+ years in data science and applied mathematics, 35+ scientific publications and 3 patents. More in About.

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