Assabet River National Wildlife Refuge

EASY 31 reviews

Assabet River National Wildlife Refuge is a 3.7 mile moderately trafficked loop trail located near Sudbury, Massachusetts that features a lake and is good for all skill levels. The trail offers a number of activity options and is accessible year-round. Horses are also able to use this trail.

3.7 miles
118 feet

kid friendly




fly fishing


mountain biking

nature trips


trail running


cross country skiing

horseback riding





no dogs

The Assabet River refuge comprises over 2,333 acres of varied woodland, wetland, fields, ponds and streams, with historical and archeological sites. The Assabet River refuge comprises over 2,333 acres of varied woodland, wetland, fields, ponds and streams, with historical and archeological sites. It is divided into a 1,900-acre northern section, a 300-acre southern section, and 91 acres scattered along the Assabet River in Stow. The terrain is primarily flat but includes some prominent hills; elevations range from 170 feet near the river to 320 feet on Walnut Hill. Seventy percent of the refuge is forested with pine, oak and maple. There are over 470 acres of diverse wetland habitat including an Atlantic white cedar swamp. This jewel is connected to about 1,000 acres of other diverse protected space. The Refuge is open year round from one half hour before sunrise to one half hour after sunset. Wildlife-dependent recreation opportunities, including hiking, photography, interpretation, and environmental education, are permitted on designated trails shown on the refuge map. Note that the trail system in the refugue was reworked in spring 2007.

trail running
17 days ago

Pretty trail, wide and flat looping around ponds/marsh. Saw two egrets, but the bugs were really too awful to enjoy the trail on a day early August.

18 days ago

1 month ago

Pleasant, very easy walk mostly on old dirt/gravel roads through varied forest and wetlands. Along the way you'll pass over a dozen Army ammunition bunkers from World War II. Take the short Kingfisher Trail to a beautiful pond.

3 months ago

4 months ago

4 months ago

5 months ago

half dirt, half road, if you're adventurous there is an abandoned air force base about 500 feet northwest of the where it says Assabet River National Wildlife Refuge on the map (its right in that little bend that looks like a nose in the Patrol Path), and its pretty cool. Closer walk to base if you park on the northwest side in Maynard and walk in southeast or if you want the fun river and woods paths you park in Subury at the 1st (for road/woods path and 2nd parkinglot (further in) (if you want more woods and some swamp/lake paths.)

6 months ago

6 months ago

6 months ago

7 months ago

Beautiful with varied habitats. Saw sharp shinned hawk, buffleheads, and a heron rookery.

8 months ago

Nice trails with intersections well marked but oddly none of the maps says "you are here" and provided paper maps are unreadable.

9 months ago

10 months ago

nice wide flat trail. peaceful.

Wednesday, August 03, 2016

Saturday, July 23, 2016

Saturday, June 11, 2016

Sunday, May 22, 2016

Peaceful hike, enjoyable paths, clean, quiet, very relaxing.

Stay away, I'd like to keep it for myself.

Sunday, May 01, 2016

It's was a great flat hike. Wide trails, marked well, hard to get lost. I did 7 miles, enjoyed the wildlife and peace. Next time I will bike it!

Friday, April 29, 2016

It was an easy hike. I did a 6.2 mile loop. Which pretty much covered all the hiking trails in the park. Some of the sceneries along the trail were beautiful.