Duratracs are good tires but not for your use. you need better cleaning for those muddy hillsides when the snow is melting, and muddying up the trail.
On the other page I saw Yokahama geolanders mentioned. Yes good snow tires. If you can afford two sets, (which I highly recommend) get a good set of studded snows for the winter. Then for the summer, a set of BFG Mud Terrains.
Why listen to a guy from Vegas? Cause I'm a Colorado native living in Vegas. I used to live in Minturn. I have already torn up all the trails you currently drive on. Hagerman, easy ones like Boreas, and tough ones like Holy Cross. And that was in the days when you could go all the way. The BFG mud Terrains would make it through the bog.
Of course I have been up peak 10, it was in the rain. The BFG's were awesome. Same with all the trails in Leadville and Camp Hale. (FUN TIP: Go to Camp Hale with a metal detector)
Get rid of those BFG all terrains. Not good for anything.
For a change of pace, go to Avon, go up Wildridge, take June Creek to the top of Red and White mtn. Great views as far as the eye can see. Great changing terrain, Aspen forests, then pine forests, creek crossings, nice uphills, not too steep, but enough for a good thrill.
To make it more challenging, go a mile further west and take Berry Creek, also ends up in the same place, but some serious hills and stairsteps. Then you can go down red Sandstone and come out in Vail, or go west to Muddy Pass and come out in Edwards...For local conditions, you need the tough sidewalls and mud terrain for those occasional stream crossings.