Well technically you can't bring a sled into that zone. But you can sled right up to the top of that zone, about where I took the picture, making the rest of it a lot less work. It's a couple maybe three miles back with about 900 vert gained. Not a hard skin, just long. Having a sled get you right there would make 2-4 laps in that drainage to be very possible.
There is a sled hot lap zone on the other side of the highway on the pass. Looks to be really good stuff back there actually. Not very many sled riders there either, as it seems the Texans just like to motor around on their sleds without skis or snowboards.