|Drive||93 miles (1 hour 35 minutes)|
|Hike||9 miles (13 miles in winter)|
Take I-91 North to exit 19, and I-93 South to exit 36. Turn left onto Route 141 at the bottom of the exit, and follow this until it joins with Route 3. Go about 7 miles on 3 North, and turn into Haystack Road on the right. In winter, park here; in summer, drive about 2 miles on this road to the trailhead for North Twin Trail.
Follow North Twin Trail 4.3 miles to North Twin Mountain, then continue 1.3 miles to South Twin Mountain; return by the same route. In winter, hike Haystack Road to the trailhead.