Whether you're a roadie, newbie, Boris biker, a fixed-gear freestyler or a Shoreditch hipster cyclist - here are some fun facts that you probably didn't know about your beloved two-wheeled friend. Ready to get on your bike? Find out how you can cycle with team ActionAid.
1. Wooden bikes were a thing once
The first constructed bike was almost entirely made of wood and several thousand copies were built and used. As you can imagine its popularity dramatically faded when the number of accidents soared and it was prohibited by the police!
2. This is the longest tandem bicycle ever
The longest tandem bike ever built had 35 seats and was about 67 feet long!
3. Bikes don't actually need riders
A bit of cycling science for you: amazingly, a bicycle can stay upright without a rider as long as it’s moving at 8mph or faster.
4. Cyclists are cool - fact
A 2014 psychological study found that cyclists have a unique blend of intelligent generosity and the "cool" factor. Now there's a reason to get on your bike!
5. Damien Hirst designed the world's most expensive bike
The most expensive bike ever, a Trek Madone or the "Butterfly Bike" designed by artist Damien Hirst, was auctioned for $500,000 at Sotherby's.
6. This bike is world-record-breaking
The largest rideable bicycle has a wheel diameter of 3.3 m (10 ft 9.92 in) and was built by Didi Senft from Germany. Gut gemacht!
7. Cycling is 3 times faster than walking
On a bicycle, you can travel three times faster than you can walk, for the same amount of energy. No other living thing can expend so little energy for so much self-powered travel!
8. Cycling can change lives
Now for the most important bit.
By joining ActionAid's RideLondon team, you can get on your bike and change the lives of women and girls living in poverty.
We'll support you every step of the way with fundraising, tips and resources. And all your efforts will be helping to end violence against women and girls and change lives, for good.