Alta has great long runs, and no boarders too. I understand the thing about access/snow cat runs, they dont count. But heck, most places out west have decent runs. Try going to the Midwest - its start, turn, turn, stop, lift line time.
Snowbird - from the top of the Tram - Isn't Chips Run from the top of the tram to the bottom long enough - try racing the tram on it LOL. 2,900 vertical if your really into it just take the "blacks" Primrose Path right down the face.
Alta - From the top of Sugarloaf Lift - Collins Retrurn to Mombo to Meadow to either Rustler Cat Track or directly to Corkscrew LOL make that run without a couple of beathing stops LOL just over 2,000 vertical
These are both Blue marked trails - Oh yeh, where do you normally ski?