100-Acre Island Preserve is open to the public for day use and limited overnight camping by permission only. No fireworks allowed. The island is only accessible by water through Mic Mac Campground (fees may apply). There is no public boat launch on Crawford Pond.

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The North End, Turtle Crossing, and Honeymoon Point are three beautiful picnic and camping sites connected by two miles of carefully constructed trail weaving through mature hemlock forest, past water views, and fallen forest giants. 

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Island access can involve steep banks and tricky boat dismounts. The trail is generally level with short hollows and hummocks in sections. There are only a few steep inclines, most are low-grade over a long distance. Some parts of the trail border wetland and can become seasonably wet.

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Access through Mic Mac Cove Campground off Route 17 in Union. Here, you can rent a canoe or kayak, or bring your own, and paddle across the pond to the island, the easiest access is at Turtle Crossing (see map).