I don't live in Boulder, but pass through there quite often. Seems like there are a lot of serious runners there and I've seen at least a few of them post on CR.

Of course Boulder is pretty well know for the 10 K Bolder Boulder race on Memorial Day weekend. They usually get around 40 to 50,000 for that.

I'm no expert, but seems like there should be a lot of good running venues around there. The weather is usually pretty favorable for running. This link:

http://www.boulder-running.com/wtr/[/URL" target="_blank">

may be worth taking a look at.

Hope this helps some.

I will be moving to Boulder in August. I have been there once (and will be there again in March) and the general outdoorsy mentality of the whole state leads me to believe there is no shortage of running activity in Boulder. I'm excited to get there myself!

Not from Boulder, but not far out in Fort Collins. One of my favorite runs in the Boulder area is Hall Ranch Loop just outside of Lyons, which by the way is a cool little town if your looking for somewhere a little more affordable than Boulder, with all the outdoor fun and games.

The Hall Ranch Loop gives you a climb of about 1500 feet with great views at the top. Probably about 8 miles up and down.

Check out this write up and then the links to a bunch of other great trails in the area: http://www.trailcentral.com/tom/index.php?key=2[/URL" target="_blank">

I live in Broomfield, which is about 20 mins drive to the NCAR trailhead (in Boulder. From there, I hop on the Mesa trail over to Chataqua Park (and more trails), Bear Peak, Green Mountain, Flagstaff, Eldorado Canyon and Flatirons Vista Trailhead off Hwy 93. You have many options and many miles of trails, depending on how far and which way you want to go, whether you want milder trails or more technical trails with elevation gain.

I have noticed that, over the years, many trail runners (in Boulder, particularly) have gotten more serious and a lot less friendly... almost as if they have to size you up rather than say hello. I still smile and nod or say hello anyway... even if I am out of breath. Also, I try to stick to the trails during the week since they are less busy. It makes everyone happier, even though I go out of my way to be polite and give right-of-way. Overall, the culture of Boulder has changed over the years - from a casual, sort of bohemian society to a more upper-class. The city is beautiful, with the backdrop of the Flatirons, and has a wonderful energy.

You can find races (from 6 miles to 100 miles) on active.com, runuphillracing.com, or in Trail Runner magazine (or TR mag online), for trail races along the front range or in any of the mountain towns.

You'll love living in Colorado and the many options of trails and races! Make sure you check out the Jefferson County Open Space trails west of Denver/Golden.

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TrailChick5

Also near Broomfield/Arvada is the Big Dry Creek Trail,
10 miles of firm gravel/dirt with lots of little side trails weaving
through the City of Westminster from Broomfield. Lots of places to park and start your run. My favorite place to park
is near La Mars doughnuts on Wadworth Blvd. After a long
run it's the perfect place to carbo load on a sunday morning.