To go as far as 90 meters (300 feet) on the normal hill and 120 meters (400 feet) on the large hill, ski jumpers fly through the air at between 80 and 90 kilometers per hour (50 and 56 miles per hour). To get up to those speeds, athletes must bend their knees, lean forward with their arms stretched back, and then hurtle down the ramp in an instant. The gradient is around 35 degrees, but skiers say it seems like 60 degrees or more from the starting point. At the moment of the jump, skiers look as though they shoot straight off of the ramp, leaning forward. But because the lip of the ramp is actually angled down, they have to time it just right and jump upward just as they leave the ramp. After that they place their body and skis to catch the wind and leave everything up to gravity.