Denver, CO:
Daytime: KCRN Limon, CO - though targeted at Colorado Springs, with a translator there, the 50 kw two-tower DA to the west also gets reasonable coverage of Denver. It's part of the Kansas City-based Catholic Radio Network. Strictly daytime-only, because of....
Nighttime: KMOX. More about that after the next sentence.
In my former Oakland, CA location: A faint KZSJ from San Martin (the far southern edge of the Bay Area market), in Vietnamese, during the daytime; KPNW Eugene, OR at night.
Retro and Personal History: I went to high school in the St. Louis area. It's impossible to overstate how influential a station KMOX was, under the leadership for Robert Hyland. For people in my age group, it was the go-to station for school closing information on snow days. During two long newspaper strikes in the St. Louis in the 1970s, it filled the resulting gaps in news coverage. Into the 1980s it maintained a reputation for steady, credible, reliable news coverage and informative talk programming under the title "At Your Service". It's still pretty good today, though there have been compromises over the years, starting with picking up Rush Limbaugh's program in 1994. That was quite controversial at the time, and my personal opinion is that KMOX shouldn't have done it. Leaving that aside, I can also note that my voice was heard on KMOX during the 1980s. The station that I worked for at the time produced a weekly religious-news program for the Missouri Council of Churches. The producer and usual anchor was a Columbia minister who had worked in radio. When he wasn't available, I would fill in for him. The show was fed to the Missouri Network, and separately to KMOX, where it aired on Sunday mornings. That's how my voice ended up on the mighty KMOX. Eventually, the program was transitioned to KMOX and longtime producer and reporter Fred Bodimer. Disclaimer: Fred and I both went to the University of Missouri; Fred was a couple of years after me and we were acquainted with one another; he's been with KMOX since 1982 and is still there.
The KMOX call letters still send a little tingle down my spine. It has had such an awesome heritage.