At prisonplanet.com they list Colorado Springs KWYD - 1580 AM.
However, I am in Colorado Springs, and 1580 AM doesnt carry the show at all. I dont know aobut the other 3 stations listed for Colorado, but I'm headed to Vail so I will check Vail KSKE - 610 AM when I get there and Denver KLMO - 1060 AM along the way, if possible.
Side note - Alex has mentioned that he sometimes gets dropped lines etc during key interviews. There is something to that, not sure who is doing it.
The last time he was on coasttocoastam for a full show (a month or so ago), the station (i believe its 1370 am colorado springs) went off the air at the exact moment alex started talking, was off air for 1 hour with silence and no explanation, then came back on air for the 2nd hour of the show. This was the show with the state reps talking about state soverignty. I'm pretty sure a station manager or something in town made the call to censor it. Fortunately, I was able to streamlink the show at coasttocoastam.com