This is a gentle first taste of gravel near Madrid: 34 km on wide riverside tracks with only 250 m of climbing in total. The surface is loose enough to feel different from tarmac, but the tracks are broad and forgiving, so you can concentrate on how the bike behaves rather than on technical obstacles.
The ride follows the river out of Madrid and back, and the pace is set for people who have never ridden gravel. It is a good place to learn how tyre pressure changes grip, how to keep your weight balanced on loose ground and how to brake without locking the front wheel.
Within the Ride Madrid range, it is the starting point for gravel. The forest gravel loop of 72 km and the volcano gravel day of 88 km are much longer and more demanding. This ride is the step before them.