brooksrunning.com is a great website for all sorts of running gear. The website has both a men's and women's shop where you can find nearly any running apparel imaginable.
A good place to find tight running pants would be an athletic outlet such as Sports Authority, Dicks, or Herb Phillipson's. You could also try online retailers such as Amazon.
If you are looking to purchase winter running pants, there are a number of options available for you to purchase them. You can try your local stores such as Dick's Sporting Goods, Target, Wal-Mart, or Kohl's. They are also available online at Impact Fitness Wear, Amazon and EBay.
Top website for running pants would be roadrunner.com. They offer some of the most popular brands of pants and tights for running at very affordable prices.
There are many online retailers and websites that sell outdoor running pants. Make sure you check several sites to make sure you are getting the best price.
There are lots of places to buy running gear online. You can get some from http://www.womensathleticpants.net/buy-cute-womens-full-length-running-pants-online
You can buy black running pants online from ebay or amazon, being websites that sell general goods they would have a lot of different types as well for your consideration.
Many retailers sell running pants, both online and offline. Walmart, Target, Kmart, JC Penney and practically any sporting goods store will sell these pants.
Most of the physical stores will sell lined running pants, however, you might find that the stock carried is highly seasonal. You would have better luck online.
There are many places where you can find reasonable running pants online, but amazon.com is probably the best place. You ca read reviews of the products you'll buy, and the prices can be very reasonable too.
"Yes, Walmart sells running pants for men and women. They come in several colors and sizes and if you can't find them in the store, you can always order them from Walmart's online site."
Yes, i wear running tights under my pants all the time...
http://www.runninggearworld.com/men's-running-pants/ has an excellent article on running pants and why they may or may not be beneficial. They also discuss what types of running pants are best depending on your circumstance.