I'm looking to get back into running as soon as I've had my baby in March and am cleared to ramp up by the doc. I'd love to do at least a half-marathon in the fall and maybe a full, depending on how things go. I can't run with you now, but I'd be happy to once I can! I live in northern Arvada.
In the meantime, I recommend running/training with Runner's Edge of the Rockies. I trained for my last marathon with them. They have many many members and split everyone out into pace groups so you run with people at your speed.
Runs are held Saturday mornings all over the metro area, which I liked because of the variety of locations I got to run in. Sometimes that means you're up really early to get there, though. You can pay up front for a full season of training or you can pay per run ($15). The fee covers the course setup (always well marked), fluids/snacks on the course (also well stocked), and coaching support. I found it was well worth it.
If you really wanted to dedicate yourself to training, you could also join Team in Training (TNT). It's a fabulous organization. I've trained for two races with TNT. Good luck and good for you for wanting to get back into running!