The bob sled on rail track stretches over an area 1.150 m long: 880 m downhill track, 270 m uphill track. The rail track is characterized by a series of curves with various height differences and radii, two loops (closed radius with a 360° curvature) and a series of woops and bumps to let you feel the adrenaline flooding your body also on straight rail tracks The downhill rail track has in each point not less than 11% pitch. In this way the bob sleds run as a result of the force of gravity. Anyway speed can be adjusted by the driver himself, regulating as he prefers the action of the brakes with the ad hoc lateral levers.