I've been told this is not true, though they do highly consider their rotators. In addition, they do not interview all their rotators. c5

I would like to reassure you that I know at least one NR who will interview in Colorado this year.

I think just like many other prestigious programs, Colorado is also very competitive. Not sure which programs included in top 10 list, but not everybody has the same rank... For me U of Colorado is within top 5, because I would consider the location of the program, facilities, organized nature of residency training, quantity and quality of surgeries you can perform. These are all factors that put U of Colorado within top 5 for me. Department chair, program director and rest of the faculty are also so valuable there. Perhaps you can find out more and decide for yourself if you get a chance to rotate there.

Good Luck

Absolutely correct. My life style for example, that I like outdoor activities, have a German Shepherd Dog, enjoy the nature... I am almost sure that I can not be as happy in NYC as I could in Denver.

Not sure about the cut off. Would not allow any score to discourage myself if I were you. When you rotate, and show that you are really interested and dedicated, no step 1 will be a hurdle for you to become a resident in Colorado or elsewhere you rotate.

Just go for it... Faculty members, especially like the ones in Colorado are very solid people who would not judge their rotators based solely on their step 1 scores.

Rotators are designated between the four sites [UCH/Children's/VA/DenverHealth] for two weeks at a time. During my month, I spent two weeks at Denver Health, the main trauma hospital. There the majority of cases where Trauma, Hand, or Spine. At the VA, I experienced a mix of Adult Recon, Hand, and Sports. I'm unsure about the University Hospital experience. There was a rotator who was specifically assigned a sports rotation, though he might have had a inside connection beyond VSAS.

From what I understand, it is competitive to obtain a spot. With that being said, I don't think it is impossible. I hail from the south. My scores are solid, upper-middle class, but not extraordinary. PM me if you want further details. This is a place you'll definitely be given a chance show your worth, as you'll work hard and long. But the atmosphere is encouraging and the experience invaluable.

As to your previous questions:
1) Rotators are treated like a part of the team. We had specific responsibilities and were utilized throughout the day and on-call.
2) The residents and attendings were extremely approachable. They never seemed bothered by our presence, quite the opposite. Many times, the residents would buy my lunch, breakfast, or coffee. Had an attending take us for breakfast one morning when the first case was cancelled. I heard of them also taking the medical students for wings and drinks every friday.
3) Degree of participation is resident/attending dependent. At DG (Denver General), you tee up the notes with vitals, change dressings, collate the list before rounds, help with cases, manage the floor, and help out with consults. At the VA, you see patients in clinic, write up notes (must have VA access), present plans, scrub cases, tee up notes with vitals.
-tl;dr You definitely help out a great deal and they don't forget you exist.

Was talking to a 4th year I know that rotated through and said that while he loved the program and residents/attendings, he felt there might be a bias against guys that are couples matching (which he is doing, and he didn't get an interview after doing his away) and that most of the residents were single that he met. While I thought this sounded extreme and maybe slightly paranoid, I know Colorado expects hard work and long hours, and was wondering if they might prefer a single resident that has less "distractions" outside of the hospital?

Diggidy-
The thing about the CU program is that they expect their rotating students to work hard; by leaning on us a bit, they allow us to shine and really show our merit. The fact that they explicitly state that they will not be interviewing all students, allows you to know upfront whether they are seriously considering you. With that being said, there were plenty of residents who were married before starting their residency. Just from the PGY-1 class, there is a guy who is married (wife not a physician), a guy who couples-matched, and a guy who is single. The other three PGY-1s, I did not have the pleasure of interacting with, so I can't comment on their status. In addition, all the chiefs are married with kids, except one.
Honestly, I know of a few rotators who did not receive interview invites. Though we all like to rationalize why that is the case, I do not personally believe it has anything to do with marital status or couples matching. They want men and women who are willing to work hard and are good operators. They also seem to want applicants who gel with the residents and are team players. Those qualities have nothing to do with having a significant other.