Hike to Mount Isolation and back:
4004 feet high (3300 feet up)
15 miles 9 hours (difficult)
via Rocky Branch Trail, Isolation Trail and Davis Path
Just hiking up:
7 1/4 miles 5 1/4 hours
Hike List: NH 4000-Footers
Guide: AMC White Mountain Guide
Website: New England Hiking
Website: AllTrails