Extreme weather: When is a WorldTour race actually cancelled?

The 5th stage of the Giro d'Italia 2026 was one big torrent. It wasn't raining - it was pouring. Riders reported rivers running over the road and temperatures that were more reminiscent of an autumn classic. But as spectacular as the images were: The stage was not cancelled. This raises a question that is discussed time and again in professional cycling: At what point does the UCI cancel a race due to extreme weather? The answer is more complex than many people think.

What the UCI regulates - and what it doesn't

There is no single paragraph in the official UCI rulebook that says: "A race will be cancelled if it rains X amount." Instead, there is a separate procedure: the UCI Extreme Weather Protocol (EWP). It is part of the general organisational rules and is used by the UCI as a binding guideline for all road races. The protocol does not describe any fixed limits, but instead assesses situations based on hazard criteria.

Extreme weather - Critical conditions

At the centre of this is a special group that is convened in the event of extreme weather. It is made up of the race director, the UCI medical director, representatives of the riders and teams as well as the organiser. Together they assess the situation: How dangerous are the conditions really? How will the weather and route develop? What are the health risks? Only on this basis is a decision made as to whether a race should continue as normal, be neutralised, shortened or abandoned altogether.

The criteria that play a role here are varied. Extreme cold or heat can lead to intervention, as can heavy rain that floods roads or severely restricts visibility. Snow, ice, squalls or thunderstorms are also potential sources of danger. Things get particularly tricky when the combination of weather and route profile creates an incalculable risk - for example on descents, in tunnels or on exposed mountain roads. The UCI emphasises that the safety of the riders always has priority, but at the same time, flexibility is required because weather conditions change quickly and races take place in very different conditions around the world.

Rain alone is not enough

So why was the rainy Giro stage not cancelled? Although the images looked dramatic, the conditions were below the threshold that the Extreme Weather Protocol classifies as critical, according to the organisers. The temperatures were not extremely low, the roads were passable despite the masses of water, and there were no thunderstorms or unusual visibility problems. In short: it was unpleasant, but not dangerous enough to intervene.

The Extreme Weather Protocol thus demonstrates its central characteristic: it is deliberately formulated openly in order to be able to react flexibly in individual cases. For drivers, however, this also means that decisions are often debated - because what is still drivable for some is considered irresponsible by others. However, one thing is clear: a race is not cancelled because of rain, but only if the overall situation poses an acute danger. And in the end, it is not the weather app that decides this, but a committee that is supposed to protect lives in extreme weather in an emergency.