Assabet River National Wildlife Refuge

EASY 13 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 Loop

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.

7 days ago

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

1 month ago

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

2 months ago

nice wide flat trail. peaceful.

7 months ago

7 months ago

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

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

8 months ago

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!

8 months ago

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.

9 months ago

nice area for turtles, fish, and chipmunks

10 months ago

11 months ago


1 year ago

1 year ago

Soooooo many mosquitoes

1 year ago

I really like this place as it's one of the few spots within reasonable driving distance from the city where you can't hear any roads or highways. There are plenty of trails and a lake. You can make your hike anywhere from 2 to 10+ miles long. Keep in mind that the northern section (north of White Pond Road) is closed to hiking.

The trails are wide and mountain biking is allowed on most. There's plenty of wildlife to be seen if you stay still for a few minutes. There are 50 munitions bunker dating to WWII present in the refuge. Some may find these a bit creepy, especially on an overcast day, but I think they're a surreal glimpse into history.