Wonderful trails and nature. We ended up doing bear paw and backpacker trails on a weekend. Not crowded and great sights.

We hiked pipeline trail and looped around to pioneer. It was perfect for my 4 year old and 9 year old who dont get out hiking too much. Its beautiful out now because of all the colors of autumn

Miles upon miles of trails, mostly through woods. Come prepared with bug spray and a good attitude towards dogs and youll be a happy camper. Dont come here if you dont like dogs - it is a popular off-leash destination.

Great state park, especially for dog owners. There’s a multitude of trails, some through the woods and some through wide open fields. They are well maintained and well marked for the most part. Almost everyone you see will have a dog, and if you make it to Eagle Pond there’s an unofficial dog park with lots of pups running around off leash. It does seem to get pretty crowded along the main trails, but if you veer off you’ll find yourself alone in nature. Well, besides the occasional house or farm!

Biking here is where it’s at! Well constructed trails filled with informative signs so you’re never lost. Really a great place to come enjoy nature and wildlife.

Beautiful trails. We did the Gibbs loop trail. Was not crowded. Definitely recommend this.

We had a great time! Not super crowded, lots of cool hangout spots. Not many people were wearing masks and no one had their dogs on leashes so be aware.

Great well maintained trails. Trails are often relatively wide, so good for social distancing. Lots of good mountain biking options, if thats your thing.

Nature at its finest. There a lot to experience at Callahan, get off your bum and hike a day! Just watch out for the horse manure!

This place is beautiful. Tons of trails. The main loop is 3.8 miles. Its just a really well kept area.

Love this place for walking dogs! There are soMany meandering trails and different types of fun terrain from trails to fields to streams for the dogs to enjoy. Not too crowded in the morning either!

Nice long, reasonably scenic hiking trails very close to city. Accessible and rustic spot

This is my go to hiking area, it’s not too far from where I live and it’s a hiking spot that’s not too intense and not too mild, so it’s a perfect medium. On top of it there’s a nice dog park and pond that is relaxing to be by

An old favorite. We used to come here more when we lived closer, but I always love it when I come and discover a trail I hadnt been to before. It can be noisy and a little chaotic on days when there are lots of dogs running off leash, but usually they stay together near the pond.

Beautiful state park with nice hikes all around

Small but really beautiful. Everyone must go there during good weather times

We had a great time at the park! The trails were great and everyone we met was nice. We even saw someone riding a horse! We will definitely be back.

Its fun to walk through trail but keep water with you since you wont find drinking water anywhere while walking through the trail

Great place to walk your dog

Love this park! We take our pup here every weekend. Its great to be able to practice come while off leash. Clean and well maintained.

Great place to get away.

Very nice place, we went walking on the Marlborough side. It was quiet and beautiful. I honestly had no idea it was so close and we will be going back this summer for further exploration.

Most beautiful place ive been in a while

I like the north side of Callahan better than south because of fewer people and dogs... however you will sometimes see horses & trailriders on either side.There are water features on both sides, lots of trails, wildlife, & letterboxes. Callahan borders many lovely spots and has ample parking.The south side is generally better for winter walks because it is well-traveled, relatively less hilly, and trails are a bit better marked. It does get muddier though in spring.The online trail map comes in handy until you are familiar with the area. The Bay Circuit Trail crosses through the north section on it way to Marlborough & Southborough, which is a lovely day hike if you start in Sudbury near Tippling Rock, traversing Callahan in Framingham. You can make a nice 10 mile hike out of it and pass some historic places.

Lovely park with long, winding trails. Its a great place for letting dogs off leash and there is a huge dog walking community that comes here. Gets a bit busy on the weekends, and their parking lots fill up and are full of cavernous potholes. There could be more done to care for this park but it is a great place to go.

Its nice for walking plus there are a good amount of pokestops n gyms

Amazing park with great trails

Beautiful nature trails with alot of American revolution history. The picture of the well is the property next to the park

Love the hikes here. Very well maintained also.

Nice trails, beautiful scenery.

Love early morning hikes on the north side. Not usually very crowded, great for dogs.

Off leash space for dogs to play (not fenced in) and dog friendly trails. One thing I cant stand is the horse poop on the trails, my dog loves to roll in it.

Nice sunny day for a change.

The walking trails need to be updated and trash needs to be picked up.

Great experience and all around relaxing and enjoyable.

Well marked trails, nicely maintained

I love this park. Great for walking, or visiting the dog park with the pup. Beautiful landscape, well kept. All around wonderful place to go

Good place for mountain biking. Wide but rooty trails. Not always marked well. There were no trail maps available when I went. Parking lot on the Marlboro side is pretty sketchy.

The dogs enjoyed it. We went back entrances off Broad Medow Rd.

Brought my dog here, great spot, lots of dogs off leash & a pond. Wonderful resource, lots of trails!

Nice trails for an easy hike. Walked with family, but would be good for running too.

Perfect for the kids short nice walk.

Nice place for a walk but bring your own water for hydration.

This park is awesome. Great trails, bags for dog doings. Look for the creepy chimney! Really want to know the story on this thing...

Nice place. You can Walker a lot

Great trails and dog friendly

Wonderful off leash dog park.

Beautiful trails, somewhat overgrown. A range of terrain grass land to wooded areas, bridges and water. A lovely place for a stroll.

Fun hiking location. Would like better trail markers as we went off our planned path for about a half mile.

Nice park with lots of trails, a pond, and views.Easy trails for hiking, and mountain biking.

What the hell is this mismatch of land?I mean its fun to explore once or twice but I have no intention of returning with all the dog poo everywhere. Maybe nice to bring a pet though.

These are some great quiet trails usually only a few people on them, pretty flat. They even just recently redid the roads leading up to the entrance I use, making it even easier to get to.

This park is great for everything. There are excellent trails for biking, running, walking the dog, and simply exploring. There are usually other people around and it is very popular for dog owners. Fantastic for afternoon walks or outdoor activities. Always make sure you have a leash for your dog because it can get a bit crazy when they all are running around.

Scenic walking trails good for solo, group or those hiking with dogs

Friendly walking trails with some pretty decent views.

Many trails and a great place to be close to nature

Beautiful place to relax. Walk ur pets and enjoy a nice day!

Lots of well-maintained trails with easy access. No maps at kiosk but easy to navigate with signage.

Nice short hike on the acorn loop. Perfect for young hikers.

Mountain biking at Callahan is beginner to intermediate level, hardtails would suffice. The north side is a bit more challenging, but if you want anything beyond flowy single/double track look elsewhere (Vietnam or Pisgah are both better options and close by). The trails are well maintained and kept free from debris but youll contend with lots of trail traffic on the south side.

Nice big park, some off leash dog areas

Large tract, beautiful land, well marked trails and plenty of them to choose from. Mixed forest of hard and soft wood with both new and old. Theres a nice pond to find and we saw signs of wildlife, but on a warmish spring Saturday, there were a lot of mountain bikers. The animals were probably in hiding.

Pretty park, accessible. Its great that dogs can be off leash but not all dogs are obedient to their owners (hence the missing of a star). I do want to know what the purpose of that chimney is though....

Great trails for dogs. the pond is a nice place to stop. my dog met a couple horses for the first time on the trail and was very interested.

Great place to let the dogs run free and have fun with other dogs. Lots of land to hike and a lot of trails. Always good times at Callahan State Park!!!

As I have been coming here for over 10yrs, I am impressed by how much cleaner it is these days. And by cleaner, I mean less dog poop. Great for exercise or leisurely hiking through the woods. There are a lot of dogs off leash, so be mindful when walking through the open area in the middle.

Great place to walk the dog, take a hike or ride a mountain bike. Large forested park a couple of miles from MA turnpike exit 12.

Great for dogs. What is not that great is the dog owners who d not collect the left overs. I know there are wild parts, but please if it is close to the trail please collect and through it.

The parking lot is too small, never plowed well and needs to be paved. The park is crowded. As a dog walker I have to choose my arrival times carefully to avoid the crowds.

Its fine. If you live nearby and want to get outside, this is a good place to come, but if you arent near, Id look for somewhere closer as its fairly generic. I was told the views were spectacular, perhaps Im spoiled but I didnt think they were anything special. Im always happy to be outside, and this place offers tons of meandering trails, which is wonderful, especially in the winter, but I wasnt blown away by the park itself. Its just a good, standard and accessible place to get outdoors in an otherwise fairly suburban area. There is dedicated lot parking but it might be tough if theres an event or group outing occurring, FYI.

Came on a snow covered and cold day so was a lot quieter than it would normally be. Nice combination of trails and some open space. Nothing too special, I can see it being a good place to bring your dog. Otherwise I would not normally travel out of my way to go here.

A perfect place for dog owners. Not the greatest place to go if you dont like dogs or prefer quiet and mind ones business. Most dogs run free unleashed here and they will interact with humans (as well as each other) in various ways. This is particularly notable for parents with small children.

Such beautiful trails.

Nice little system of trails. A bit icy and wet today but still a fun walk. Saw three deer too! Ill be back to snowshoe after it snows next for sure!

Beautiful walking trails. Great area for dogs.

Many butiful birds. mother earth is weeping because hardly any one is outside enjoying what she has to offer.Wifi.wefri.electronics has many under the spell.enjoyher before shes gone.

Great spot to go for a casual walk in the woods! Its not the most scenic of parks, but theres a nice little pond near the entrance with some picnic tables. Good spot to bring kids, dogs, etc.

Great spot for mountain biking. I was impressed with the technical terrain offered. Well mapped too

We love place..

A really good park and very dog friendly... users could do a much better job of cleaning up after their pets, and there are lots of trees down sometimes blocking trails, but its a beautiful walk

Part dog park, part hiking trails. Really nice little hills and loads of space for the pups to meet and sprint.If you dont like dogs, Id skip this one.

So many different trails here. You can find easy or challenging hikes, runs, walks or rides. Anywhere from a short walk to 10-20mi. Also many of the trails allow dogs to be off leash, so its a great place to take the puppys for a walk or run!

The park breaks into two main areas South and North of Edmunds road with backpacker trail crossing it. The South has more open fields and dogs. The North has rocky trails and extends into Marlboro. Its easy to find 4-10 mile runs without looping over that same territory. Backpacker to bear paw is a good run in the north.

Beautiful fields, ponds, lakes, and forest. The only complaint I have is theres a lot of dog poop.

Go with Caution. Im a dog lover(background). I was sitting on the side of the road while a German shepherd sneaked over in what I see as half hunting mode. The owner was not far away and wasnt concerned at all. Somehow it got around one meter away from my back. I watched enough Wild Life shows to know the risk of show my back and neck. So I turned around to face the dog. Meanwhile it got more serious and took my shirt on the ground, and started shaking it around violently. I knew it was no ordinary dog that I usually saw around here. So I started questioning the owner about the dog behavior. She was still not concerned and slowly walked towards me, saying it might just want to play. Honestly I didnt feel she cared about my safety at all. Now the dog barked more intensely, and at one point almost got to my leg. All those time I stood still and tried to ask the owner about the dog behavior, indicating taking it away from me. She cared less, and slowly and half-assingly leashed the dog.I also saw a post on the entrance tree saying that the kid was a hurt by a dog whose owner was unknown and she had to be quarantined for 6 weeks for potential disease risk.I just hope some dog owners can be more responsible and care about the people a bit more, instead of just their dogs.

The Google address sends you what is little than a farm. The dog park and main park area is on Winch Rd. Dogs must be on leash so it’s not the usual dog park where dogs socialize and run free

Great trails great place to walk run or take your dog or kids. There is a pond so dogs get wet and there are some Fields with tall grasses so you want to do a tick check but the kids and pets have loads of fun.

It is a beautiful place for a walk or hike. Lots of different pathways make it a very nice place to go. However, there are a lot of unleashed dogs all around, especially near the pond. Unfortunately some dog owners throw their bagged dog poop on the edges of the paths. Pretty gross! Please dog owners throw your dogs poop in appropriate containers.

Great place to walk the pups

Loved the park! There is a few trail you can take.. took my over excited German shepherd for some social skills defitnetly coming back for more training

Love taking the dogs here! The people are really friendly, and the place is so big! Only downside is that some people arent great about picking up after their pet.

Great spot to go for a walk, plenty of trails to explore.

Great off leash dog park. The trails are nice to walk with my dogs.

Lovely place to walk, and pond for dogs to swim. Downside: encountered a male mountain biker today who chose to deficate into the very pond that all dogs swim in. Left a large pile of disgustingness floating in the pond. Disturbing, given number of signs around about cleaning up after dogs. Dogs don’t poop in the swimming hole... let your dogs swim with care, and wash them once home.

Nice place to hike and take dog off leash. Would be nice if more of the trails were marked.

Great place to hike in the woods. Some trails are not clearly marked.

Great for walking humans and romping, splashing dogs

Beautiful Park beautiful State Park some of the people visiting that lives in Southborough and then Marlboro and in Natick and in Wayland were so mean to me though and I forgive him cuz most people that visit the park are not mean it was just a bad day they must have been high on crack or something I dont do drugs !

Too many dogs off leash and piles of dog poop that inconsiderate dog owners do not pick up! There are a lot of different trails and entrances to the park.

Great place for dogs to play with other dogs. Fields streams and a pond to cool off in.