The beautiful Sapsucker Woods trails are part of the Cornell Lab of Ornithology and run through their 230-acres of forests, ponds, and swamps. There are 4+ miles of trails and boardwalks, as well as a visitor center, bird-watching, and free parking.
There are two main sets of trails available for walking/running on. The trails connect across a small road and can be made into about a 4 mile loop if you run some of the interior loops as well. The trails are made of either wood-chips or boardwalks, and hold up to some snow and rain very well. The foliage in the fall is unbelievable.
Make sure to stop by and check out Cornell University's Lab of Ornithology on your way in! There are some incredible displays and exhibits, as well as a great gift shop. There are also trail maps and bathrooms available there!