Snow Creek Road is 1,240 feet above sea level
Black Mountain Truck Trail is 16 miles away at just under 8,000 feet
You gain 6,760 over 16 miles with only a few steep sections
Then over the next six miles you go up to 8,700 feet on the fuller Ridge to the junction of Deer Springs Trail with just under 2,000 feet of gain, then from there it's 2.3 miles up the Deer Springs Trail to the summit and another 1,400 feet approximately, so you cover 9,564 feet of gain from the valley floor and 24.3 miles all according to the Three PCT Books, CD's and State Park Maps I have - from there it's the usual 6.1 miles to the tram by way of Wellmans Divide, less if you take the Sid Davis
There are some ups and downs in the fuller ridge area so you do gain more than what's listed above but mileage wise it's 30.4 miles to do the whole route, about 15 hours with short breaks, I made 14 last year but that was after very long break at the Fuller Ridge Campground as Hal was kind enough to support everyone with drinks and a ride out if you had hit the wall - Thanks again for that Hal
Compared to Skyline you gain the same amount of altitude but you do it over 24.3 miles versus 17.1 miles on Skyline all the way to the summit.