I started with the easy ones above Boulder: Green, Flagstaff, Sanitas, Bear Peak and South Boulder Peak. One friend of mine pointed out that probably Bear Peak shouldn't count as a separate peak since it is so close to South Boulder Peak, but I've always viewed it as a separate peaking and I'm counting it, at least for now.
I've also done Longs Peak, of course, since I'm doing the LPP. And Meeker and Estes Cone and Mountain Lady Washington.
Today I bagged a couple of peaks that I learned about via Homie and Jeff Valliere. Ones I hadn't ever thought about before. There are no trails anywhere on these peaks, so it was just exploring up hillsides. I found the directions and route description on summitpost.com. The route I took up Coal Creek Peak was very direct and involved lots of sustained scrambling on the upper part. It was almost tedious getting to the summit, but I was just moving slow and cautious and listening to my book and just enjoying the outdoors.
I wasn't sure I wanted to go to Crescent Mountain because of the complicated, rocky, densely-wooded terrain, but decided to go for it. I went over one unnamed bump enroute and encountered a bit of postholing below the summit, but it wasn't bad. I descended steep, brushy terrain until I hit a dirt road at a cabin. I followed this all the way down to Coal Creek Canyon highway 72, going past a number of cabins and a big fifth-wheel that I was amazed they got up this steep road.
It was nearly three miles of running along the highway to get back to my car. I thought I'd read that it was more like a mile, but that just gave me a chance to do something other than slow hiking. It was a fun loop of nearly seven miles and 3000 vertical feet, but I'm not sure I'd recommend it to many people. You'd have be pretty into peak bagging or solitude to do these mountains.
But, I've now done 11 unique peaks for the year and I'm ahead of schedule.