Almost any girl can learn to pee standing up and not have it run down your leg. There are a couple of different ways.
The most efficient just requires your fingers. You have to spread your labia and pull it upwards a bit so that you expose your urethra and have nothing blocking it. You'll want to roll your hips forward so that your urethra is aiming forward instead of straight down. Then, pee away. With a bit of practice, you can pretty much pee just like a guy. Practice in the shower so you can learn without making a mess.
If you can't or won't do that, then you can use a funnel to simulate a penis. There are purpose-made funnels, like the EZ-Pee, but you can easily take a paper plate, fold it in half like a taco shell with a curve at the bottom, stick it between your legs pointing down, and let 'er rip.
These are all very common techniques that females use who go backpacking or do sports that keep you away from civilization.
well not all girls can do this..some HAVE to squat'sit...it depends on the girls vagina..her lips..position of her urethra..how MUCH she has to pee..if its a strong urge and a lot of pee..then itll fly straighth..if its just a little [msot girls have small bladders]..then itsll literally dribble lol..
tmi but I know this cus my girlfriend CANT pee without sitting lol..shes petite so small bladder I guess lol..
well I've never tried it before but I suppose if you don't want it to run down your leg, you would have to angle yourself somehow. Why does it run down your leg you ask? most probably because of gravity.