Okay, so let's put something in place. I've seen a few up for Colorado and I guess you eastern folks need to pick a place hehehehe. Let's do it in July, like the 16th - if we don't throw a date out there it won't happen so there you go, make arguments for or against it hehehe.
There are some good dog parks in Colorado, I'm partial to the one near me in Castle Rock ("Fairgrounds Regional Park"), but there's a HUGE one (5 acres) at I-25 & Surrey Ridge (just South of Lincoln & I-25) - "Glendale Farm open Space". I haven't been to this one but I drive by it everyday and could scope it out, wow 5 fenced in acres for boxers to roam free on woohoo.
Here's the website about these:
http://www.douglas.co.us/DC/Parks/Dog parks.htm
You can see there's many more...