Re elevation, ideally not much more than 2,000 AEG per ~20 miles. Our hiking group has one (lovable) weak link whose kryptonite is AEG. Put that person on flats and you get 30 mile days, but one big effin' climb and it's lights out . . .
Point being, I would very much welcome hike suggestions in CO that are "Cabin Loop Plus" re. AEG
We're leaning towards the Gila, having found a nice ~45 mile loop there that combines East and West Forks. There's currently a fire closure that has the road access shut, but we're hoping that will open up in the next three weeks. We're also monitoring water levels as the monsoon approaches. Other advantage to the Gila is that when we're done, we can head into town for sopapillas, which are the best culinary contribution since the sandwich.
The issue we're finding with the TRT now is that hiking the CA-side appears to technically violate CA's stay-at-home order. I'm a rule follower. Also, it needs to be point-to-point given our distances, and I don't have confidence in active public transit.
We found a series of loop/cherry stem hikes in the Uinta/Wasatch Wilderness outside of SLC that are backups to the Gila. I look forward to researching any CO ideas you have. 'Cuz I ain't driving to Oregon.