The Tour de France is the world’s biggest annual sporting event. Nearly 200 cyclists race over 2,000 miles in just 23 days.

It’s normally held in July but delays brought about by the coronavirus pandemic has meant the 2020 Tour finishes on 20 September.

There are now restrictions on the number of spectators who can watch and all of those who do need to wear masks.

It’s also meant that the 2020 race will be kept inside French territory and there will be no stages abroad.

All of the riders are being kept in bubbles and are regularly tested to make sure they don’t have coronavirus.

So do you know your yellow jersey from your polka dot? Your prologue stage from your flat? If not, Newsround is here to help.

What is it?

Basically, it’s a huge bike race around France!

Millions of people line the route that’s made up of 21 stages raced over 23 days – that means they only have two days off to rest. Ouch!

The riders average around 25mph over the entire course but at some points they’ll go a lot faster than that, sometimes over 70mph!

Every wondered why the riders are so thin? Well, it’s fair to say it’s a good way to keep fit.

If you finish the gruelling Tour, you could burn off up to 118,000 calories. That’s the equivalent of 26 chocolate bars per day!

What do the coloured jerseys mean?

The green jersey is the points prize. You get points for being one of the first riders over the line on each stage. It’s usually won by a sprinter.

But the tour isn’t just about reaching the highest speeds – it’s also known for its uphill struggles. The riders climb thousands of metres up Alpine mountains, with the best rider on those stages winning a snazzy red and white polka dot jersey.

The white jersey is given to the best young rider – that’s someone who’s under 25 years old.

But the prize everyone dreams of is the yellow jersey. If you are wearing it, you are the overall race leader on total time since the start of the Tour.

Tour champions are often strong at everything – climbing, sprinting and time-trialling.