Historical Temperatures for Conway NH for March 12-13th
High 37 *F
Low 15 *F
The Sawyer River Road is closed at Rt 302 so it would be approximately 5 miles and 1200 feet of elevation gain.
We would probably be breaking trail after the intersection of the road with the Carrigan Notch Trail [2 miles in] or from the Sawyer Pond Trailhead [3.75 miles in].
Rt 302 would definately be the way to approach it, as opposed to coming in from the Kanc or Bear Notch Road. I don't expect those trails see much winter traffic.
The good news is that the 1200 ft elevation gain is a consisntently distributed so the steepness is pretty much the same for the entire trip.