I coach a 13U traveling team made up of the best 12 and 13 year olds in the city of 1.2M where I live. The first thing you have to do when it comes to pitching speed is distinguish between "crow hop" speed and "live batter" speed. Crow hop is taking a few steps and launching the ball with maximum velocity, but without much regard for location control. The best 12 year old I coached could hit 70mph on crow hop, and I expect he'll be closer to 80mph when he's about to turn 14 years of age. No one throws that fast when pitching against a live batter, either in a game situation or in pens, because you need control to ensure you are efective in getting batters out. So, the 12 year old who crow hops 70mph will hit 63-65 mph with decent control in games. I expect when he's 13 he'll pitch with control in the low-mid 70s. This kid is tall and skinny, very dedicated to the sport, and has a competitive streak second to none. If he keeps it up, and avoids injury, he's solid college material.
60-80 mph but accuracy and movement are more important, while speed plays a small part in pitching, if you haven't hit 70 yet work on integrating other pitches in that us 12 year olds can throw I'm 12 and I throw a 2 seam 4 seam Knuckleball Forkball Palmball and Circle change I recommend the palmball and circle change because if you throw them right they move the entire width of the plate or strike zone
A 10 year old girl should pitch about 40-55mph.
Should pitch at least 75 at high 80
Pitching a fast ball at 69 mph will not harm a 13 year old. A 13 year old should not be allowed to pitch a curve ball or any other pitch that may hurt his pitching arm. Curve balls should never be pitched by any boy under the age of 16.
38-45 mph
It depends on how much they practice and workout. So anywhere from 45-55 miles an hour.
fast.
Honestly, It depends on the girl. Some don't even pitch 40, while others pitch nearly 60.
They can usaly pitch about 50-60mph cause i am in softball and I am 12 and I pitch about 60-70mph
In my opinion, 12 year old shouldn't pitch the ball fast. Hard but not fast! In other words, don't hold back but don't strain either. You have plenty of time to develop speed once your body is developed. Concentrate on good fielding and ball contact when batting and your set for huge future in fpsoftball. A glove is 10 times better than a bat or a pitch.
Between 55 and 75 MPH
8 minutes
15 mph sprinting full speed is average for a 10 year old. Also, a 10 year old to run a mile in 9 min and 45 sec running as fast as they can.