It's easiest to go west to east so you're going downhill on waypoint 12 (on Trails Offroad) - unless you're looking for more of a challenge! I did it going up in a Ram 1500 once, but the trail changes all the time. It's a great trail though.
The group is the "Larimer County Four Wheel Drive Club" (https://mountaineers4x4.org/). I've been riding with them a little over a year now. The members have a mix of vehicles from stock 4x4s to dedicated trail buggies - and run all sorts of trails, from scenic rides to rock crawling. They have a once per month Sunday ride and then a lot of ad-hoc rides - collaborating in a monthly meeting (in Fort Collins), an email list, and a private Facebook group. If you're local and interested, just show up to one of the monthly third-Wednesday meetings and come along on the Sunday ride. I like to be involved with a group since there's a lot of trails that are not a great idea to ride solo - especially snow-wheeling in winter. I've run Old Flowers a bunch solo in various vehicles, but there is a possibility of picking a bad line and getting high centered in a couple spots. It's probably still beautiful up there right now with the leaves, but I imagine they're starting to fall now - which makes the trail more interesting with the aspen leaves on it.
Everything is stock still - even the tires. I'm going to see how they do this winter, but eventually I think I'm going to get KO3s, which I've run on my Jeep Wrangler TJ before, and I've been happy with for icy conditions and trail use. They're not as aggressive for trail use (as a M/T), but still do great on the freeway - so a good balance for my 4Runner use.
