these are all good suggestions. I did the race once, and about a month before the race I spent 3 days in Leadville and pre-rode everything EXCEPT Columbine. I’ve been wanting to go back and ride Coumbine just to enjoy the scenery. That part of the course is probably the most spectacular (remember to bring a raincoat and don’t get stuck up above treeline in the afternoon when the July T-storms start coming in!)
The other option, if you are really trying to recon for the race, is to focus on the other end of the course. Pre-riding this part is very valuable for the race but maybe not the most fun.
You could ride from the start to St. Kevens and back or even all the way to the bottom of the Powerline descent or the fish hatchery and back (that would be getting up to a 40 mile ride, pretty long day)
The very first few miles contain some turns on and off the pavement. On race morning you’ll be cold and going surprisingly fast downhill in a huge pack. Those turns can sneak up on you, so knowing how to position yourself in the pack for those turns ahead of time can be valuable. A lot of people quickly scout this section a day or two before the race if they come to town early to acclimate.
Scouting the end of the course is valuable, too. remember that the final few miles are slightly different than the outbound - it’s not EXACTLY an out and back course and the race is like 103.3 miles, not a round 100. So if you haven’t scouted the finale, on race day when you are bonked and miserable you might be wondering where you are and when the heck the race is ever going to end. There also is a loose babyhead climb in the final few miles that is worth seeing ahead of time.
But in any case, have fun. I’m jealous.