The complete reference for cycling
Cycling The races, the rules and the gear.
How road, track, cyclo-cross, gravel, mountain bike and BMX racing work, what the UCI's equipment rules allow and from when, helmet standards and e-bike laws by jurisdiction, safety as the official bodies publish it, the big races and the history of the bicycle.
Everything, in one place
browse A–Z →Learn
The UCI and national federations, the disciplines, how road and stage races work, track events, licences, e-bike classes and road rules.
Fundamentals 02Equipment
Bike types, the UCI equipment rules and the 2026 changes, groupsets, wheels and tyre sizes, helmet standards, lights, locks and e-bike batteries.
Gear 03Safety
What the official casualty figures show, helmet evidence, concussion protocols and race safety, as the bodies publish them.
Safety 04Events
The Grand Tours, the Monuments, the World Championships and the Olympics, with results by year.
Racing 05History
From the draisine to the safety bicycle, the first races, the Tour de France and the Hour record.
History 06Gear guides
What each category of gear is for, by rider and use, with no brands and no prices.
Guides