How do you tell muscular legs on woman from just skinny legs?

Question

I don’t know how to tell if running has made my legs get stronger (noticeably) or if it’s just my build. Are there any easy ways to tell?

Answer

In my opinion, this is what I consider “muscular” legs

Where people train to purposefully build their muscle mass  (to grow in both size & strength) via weight training.
Where as this is what I would consider fairly “lean” legs (but not necessarily “muscular”).

Which I feel is what many runners tend to have. 
I’m guessing you’re noticing your legs lean out a bit as you lose body fat from running as opposed to a drastic increase in muscle mass (which is more of a result from heavy weight training which generally takes years) 
Running I’m sure will improve your leg strength (so long as you have good joints, proper shoes & good form) but you will probably lose more body fat than anything & any increase in muscle size would probably be quite minimal in comparison to weight training.

Answer

Running will give you toned legs, especially in the calves

How do you tell muscular legs on woman from just skinny legs?

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