Leg Pain!

I went to Fresh Pond for a run - no idea why I haven't gone there before.  From the Trader Joe's parking lot it's 2.9 miles around the pond - perfect for a nice shorter run!  It's mostly flat, there are a ton of people and dogs to watch, and part of the path is even dirt.  Anyhow, I got about a third of the way through my run and my right leg was killing me!  I think I need to get back into lifting.  I wound up running for 22 minutes total, and walking for a fair amount too.  Nice day for it, and not a total fail because I did still go almost 3 miles.