From the south parking lot, it is a 2.6 mile round-trip hike to Gap Mountain’s middle summit and back. This is a strenuous hike over steep terrain, so please be sure you have sturdy footwear and plenty of water. From the South parking lot, follow the yellow blazed trail 0.4 mile to where the trail merges with the Metacomet Monadnock Trail (white blazes). Continue straight ahead on the M/M trail, following the white blazes, emerging on the middle summit at 1.3 miles. If you wish to visit the north summit, follow the white blazes down into a swampy area and then back up to the summit (0.1 miles beyond middle summit). NOTE: On returning to the parking lot, remember to look for the yellow blazed trail to the parking lot on the left just after crossing the stream.