I've just started running after years of inactivit(!). I've been training on a treadmill at home, and I'm currently able to run 5 miles in about 50 minutes.
I was a bit dismayed last week when I did my first run in the great outdoors to find how quickly I got tired out - mainly because I started too fast. Any tips for pacing when you don't have the visual indicators of a treadmill? Also, what's a reasonable time to run 4.5 miles if you're new to running - am I likely to be the last one to finish the race?