I’m a frequent visitor since the 70s as I’ve relatives in the area. My dogs and I have done the 4Pass loop often and connecting Capitol Creek loop (47 miles), usually in late July. Day hiking up to Buckskin Pass and West Maroon Pass is a regular pastime in Sept for leaf-peeping.
I was up at Indy Pass Sunday hiking the Lost Man 9 mile loop and it was very busy. In fact, I’ve not seen such crowds in years. Will that mean Sept will be overrun with hikers and BPers? Can’t predict. But if covid numbers don’t improve count on the trails being closed as they were in early Spring.
Please note:
Keep you dog on a leash. It’s the law. Get a 6 foot expandable leash and use it. If a Ranger sees your dog off-leash you will be fined. If they see your dog chasing wildlife they have the authority to shoot your dog, though I’ve never heard of this happening. Unleashed dogs are a major problem on the trail and people don’t get it.
A hard-sided bear canister is required. Ursack is NOT allowed. Hanging a bear bag is NOT allowed. You will be fined and escorted off the trail if your do not the proper container. Fines can top out at $5K.
Weather mid to late Sept can be problematic. Be prepared for below freezing temps at night and the possibility of snow. Late Sept blizzards can happen. On the flip side it can be very warm during the day — shorts and t-shirt attire. Be prepared for anything.
Reservations are not required but you must sign in at the trailhead –there are several trailheads– and carry the tag with you at all times. There are designated campsites along the trail. Dispersed camping has been allowed but that was to change this year however due to covid that rule may have been put off.
Enjoy. It’s a great hike. Be sure to acclimate a couple days at increasingly higher elevations. I doesn’t matter how physically strong you are. With 20% less O2 you need to adjust or it will be a very tough go . . . unless of course you already live at 10K.