Does running (distance or on the spot) bulk up or slim down your legs?

I really don't like my legs because they're really large, and I've always wanted skinnier legs since I was very very young as 10 years old, I am now 18. So I was wondering if I run (even running on the spot if I can't go outside and run because of weather or time, etc), will that bulk up my legs, or make them slimmer? At least on the inner thigh regions/areas because that's where I'm most concerned.

please don't tell me "love your body for how it is", or "accept the body that you were given" or any of that other sappy stuff because if you'd see my body, you'd know instantly why I want slimmer legs
Bulk up
Slim down
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Does running (distance or on the spot) bulk up or slim down your legs?
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