You fall pretty fast when in freefall. After exiting the aircraft gravity starts to accelerate your body towards the ground and it take about 12 seconds to reach a maximum speed of around 175 ft per second which is roughly 120 mph.
Once you have reached this terminal velocity your body will continue to fall at this rate, falling 1000 ft roughly every 5.5 seconds. If you exit the aircraft on a tandem jump at 13000 ft where the parachute is opened at 5000ft you will be in freefall for about 45 seconds.

The highest speed ever reached in a speed skydiving competition is 524.13 kmph (325.67 mph) by France's Michael Brooke at the Millennium Speed Skydiving Competition over Gap, France, on September 19, 1999.