How long are Off The Wall and Upper Silver Streak?... they look incredibly long on the trail map.

Can someone estimate their length or know of a comparable trail length in the Southeast?

Silver Streak is in the 4000-4500 foot range top to bottom, and I think Off the Wall is around 3000-3500 feet (doesn't go as far down the mountain). Heavenly and Dew Drop are both close to a mile- that's always impressed me: a mile long intermediate run in the south. No, wait: TWO mile long intermediate runs in the south!